Questions and Solutions

Class: 12 Subject: Math Type: Long

Question 1:

Find the integral: \( \int \frac{x^3 + 3x + 4}{\sqrt{x}} \, dx \)

Class: 12 Subject: Math Type: Long

Question 2:

Find the integral: \( \int \frac{x^3 - x^2 + x - 1}{x - 1} \, dx \)

Class: 12 Subject: Math Type: Long

Question 3:

Find the integral: \( \int (1 - x) \sqrt{x} \, dx \)

Class: 12 Subject: Math Type: Long

Question 4:

Find the integral: \( \int \sqrt{x} (3x^2 + 2x + 3) \, dx \)

Class: 12 Subject: Math Type: Long

Question 5:

Find the integral: \( \int (2x - 3\cos x + e^x) \, dx \)

Class: 12 Subject: Math Type: Long

Question 6:

Find the integral: \( \int (2x^2 - 3\sin x + 5\sqrt{x}) \, dx \)

Class: 12 Subject: Math Type: Long

Question 7:

Find the integral: \( \int \sec x (\sec x + \tan x) \, dx \)

Class: 12 Subject: Math Type: Long

Question 8:

Find the integral: \( \int \frac{\sec^2 x}{\csc^2 x} \, dx \)

Class: 12 Subject: Math Type: Long

Question 9:

Find the integral: \( \int \frac{2 - 3\sin x}{\cos^2 x} \, dx \)

Class: 12 Subject: Math Type: Short

Question 10:

The anti-derivative of \( \left( \sqrt{x} + \frac{1}{\sqrt{x}} \right) \) is: (a) \( \frac{1}{3}x^{1/3} + 2x^{1/2} + C \) (b) \( \frac{2}{3}x^{2/3} + \frac{1}{2}x^2 + C \) (c) \( \frac{2}{3}x^{3/2} + 2x^{1/2} + C \) (d) \( \frac{3}{2}x^{3/2} + \frac{1}{2}x^{1/2} + C \)

Class: 12 Subject: Math Type: Short

Question 11:

If \( \frac{d}{dx}f(x) = 4x^3 - \frac{3}{x^4} \) and \( f(2) = 0 \), then \( f(x) \) is: (a) \( x^4 + \frac{1}{x^3} - \frac{129}{8} \) (b) \( x^3 + \frac{1}{x^4} + \frac{129}{8} \) (c) \( x^4 + \frac{1}{x^3} + \frac{129}{8} \) (d) \( x^3 + \frac{1}{x^4} - \frac{129}{8} \)

Class: 12 Subject: Math Type: Long

Question 12:

Integrate \( \dfrac{2x}{1+x^2} \)

Class: 12 Subject: Math Type: Long

Question 13:

Integrate \( \dfrac{(\log x)^2}{x} \)

Class: 12 Subject: Math Type: Long

Question 14:

Integrate \( \dfrac{1}{x + x \log x} \)

Class: 12 Subject: Math Type: Long

Question 15:

Integrate \( \sin x \cdot \sin(\cos x) \)

Class: 12 Subject: Math Type: Long

Question 16:

Integrate \( \sin(ax+b)\cos(ax+b) \)

Class: 12 Subject: Math Type: Long

Question 17:

Integrate \( \sqrt{ax+b} \)

Class: 12 Subject: Math Type: Long

Question 18:

Integrate \( x\sqrt{x+2} \)

Class: 12 Subject: Math Type: Long

Question 19:

Integrate \( x\sqrt{1+2x^2} \)

Class: 12 Subject: Math Type: Long

Question 20:

Integrate \( (4x + 2)\sqrt{x^2 + x + 1} \)

Class: 12 Subject: Math Type: Long

Question 21:

Integrate \( \dfrac{1}{x - \sqrt{x}} \)

Class: 12 Subject: Math Type: Long

Question 22:

Integrate \( \dfrac{x}{\sqrt{x + 4}},\ x > 0 \)

Class: 12 Subject: Math Type: Long

Question 23:

Integrate \( (x^3 - 1)^{1/3}x^5 \)

Class: 12 Subject: Math Type: Long

Question 24:

Integrate \( \dfrac{x^2}{(2 + 3x^3)^3} \)

Class: 12 Subject: Math Type: Long

Question 25:

Integrate \( \dfrac{1}{x(\log x)^m},\ x > 0 \)

Class: 12 Subject: Math Type: Long

Question 26:

Integrate \( \dfrac{x}{9 - 4x^2} \)

Class: 12 Subject: Math Type: Long

Question 27:

Integrate \( e^{2x+3} \)

Class: 12 Subject: Math Type: Long

Question 28:

Integrate \( \dfrac{x}{e^{x^2}} \)

Class: 12 Subject: Math Type: Long

Question 29:

Integrate \( \dfrac{e^{\tan^{-1} x}}{1 + x^2} \)

Class: 12 Subject: Math Type: Long

Question 30:

Integrate \( \dfrac{e^{2x} - 1}{e^{2x} + 1} \)

Class: 12 Subject: Math Type: Short

Question 31:

Evaluate: \( \int \dfrac{e^{2x} - e^{-2x}}{e^{2x} + e^{-2x}} dx \)

Class: 12 Subject: Math Type: Short

Question 32:

Evaluate: \( \int \tan^2(2x - 3) dx \)

Class: 12 Subject: Math Type: Short

Question 33:

Evaluate: \( \int \sec^2(7 - 4x) dx \)

Class: 12 Subject: Math Type: Short

Question 34:

Evaluate: \( \int \dfrac{\sin^{-1} x}{\sqrt{1 - x^2}} dx \)

Class: 12 Subject: Math Type: Short

Question 35:

Evaluate: \( \int \dfrac{2\cos x - 3\sin x}{6\cos x + 4\sin x} dx \)

Class: 12 Subject: Math Type: Short

Question 36:

Evaluate: \( \int \dfrac{1}{\cos^2 x (1 - \tan x)^2} dx \)

Class: 12 Subject: Math Type: Short

Question 37:

Evaluate: \( \int \dfrac{\cos \sqrt{x}}{\sqrt{x}} dx \)

Class: 12 Subject: Math Type: Short

Question 38:

Evaluate: \( \int \sqrt{\sin 2x} \cos 2x dx \)

Class: 12 Subject: Math Type: Short

Question 39:

Evaluate: \( \int \dfrac{\cos x}{\sqrt{1 + \sin x}} dx \)

Class: 12 Subject: Math Type: Short

Question 40:

Evaluate: \( \int \cot x \log \sin x dx \)

Class: 12 Subject: Math Type: Short

Question 41:

Evaluate: \( \int \dfrac{\sin x}{1 + \cos x} dx \)

Class: 12 Subject: Math Type: Short

Question 42:

Evaluate: \( \int \dfrac{\sin x}{(1 + \cos x)^2} dx \)

Class: 12 Subject: Math Type: Short

Question 43:

Evaluate: \( \int \dfrac{1}{1 - \tan x} dx \)

Class: 12 Subject: Math Type: Short

Question 44:

Evaluate: \( \int \dfrac{\sqrt{\tan x}}{\sin x \cos x} dx \)

Class: 12 Subject: Math Type: Short

Question 45:

Evaluate: \( \int \dfrac{(1 + \log x)^2}{x} dx \)

Class: 12 Subject: Math Type: Short

Question 46:

Evaluate: \( \int \dfrac{(x+1)(x + \log x)^2}{x} dx \)

Class: 12 Subject: Math Type: Short

Question 47:

Evaluate: \( \int \dfrac{x^3 \sin(\tan^{-1} x^4)}{1 + x^8} dx \)

Class: 12 Subject: Math Type: Short

Question 48:

Evaluate: \( \int \dfrac{10x^9 + 10^x \log_{e} 10}{x^{10} + 10^x} dx \)

Class: 12 Subject: Math Type: Short

Question 49:

Evaluate: \( \int \dfrac{dx}{\sin^2 x \cos^2 x} \)

Class: 12 Subject: Math Type: Long

Question 50:

Integrate: \( \sin^2(2x + 5) \)

Class: 12 Subject: Math Type: Long

Question 51:

Integrate: \( \sin 3x \cos 4x \)

Class: 12 Subject: Math Type: Long

Question 52:

Integrate: \( \cos 2x \cos 4x \cos 6x \)

Class: 12 Subject: Math Type: Long

Question 53:

Integrate: \( \sin^3(2x + 1) \)

Class: 12 Subject: Math Type: Long

Question 54:

Integrate: \( \sin^3 x \cos^3 x \)

Class: 12 Subject: Math Type: Long

Question 55:

Integrate: \( \sin x \sin 2x \sin 3x \)

Class: 12 Subject: Math Type: Long

Question 56:

Integrate: \( \sin 4x \sin 8x \)

Class: 12 Subject: Math Type: Long

Question 57:

Integrate: \( \frac{1 - \cos x}{1 + \cos x} \)

Class: 12 Subject: Math Type: Long

Question 58:

Integrate: \( \frac{\cos x}{1 + \cos x} \)

Class: 12 Subject: Math Type: Long

Question 59:

Integrate: \( \sin^4 x \)

Class: 12 Subject: Math Type: Long

Question 60:

Integrate: \( \frac{\sin^2 x}{1 + \cos x} \)

Class: 12 Subject: Math Type: Long

Question 61:

Integrate: \( \frac{\cos 2x - \cos 2\alpha}{\cos x - \cos \alpha} \)

Class: 12 Subject: Math Type: Long

Question 62:

Integrate: \( \frac{\cos x - \sin x}{1 + \sin 2x} \)

Class: 12 Subject: Math Type: Long

Question 63:

Integrate: \( \tan^3 2x \sec 2x \)

Class: 12 Subject: Math Type: Long

Question 64:

Integrate: \( \tan^4 x \)

Class: 12 Subject: Math Type: Long

Question 65:

Integrate: \( \frac{\sin^3 x + \cos^3 x}{\sin^2 x \cos^2 x} \)

Class: 12 Subject: Math Type: Long

Question 66:

Integrate: \( \frac{\cos 2x + 2\sin^2 x}{\cos^2 x} \)

Class: 12 Subject: Math Type: Long

Question 67:

Integrate: \( \frac{1}{\sin x \cos^3 x} \)

Class: 12 Subject: Math Type: Long

Question 68:

Integrate: \( \frac{\cos 2x}{(\cos x + \sin x)^2} \)

Class: 12 Subject: Math Type: Long

Question 69:

Integrate: \( \sin^{-1}(\cos x) \)

Class: 12 Subject: Math Type: Long

Question 70:

Integrate: \( \frac{1}{\cos(x - a) \cos(x - b)} \)

Class: 12 Subject: Math Type: Short

Question 71:

Evaluate: \( \int \frac{\sin^2 x - \cos^2 x}{\sin^2 x \cos^2 x} dx \)

Class: 12 Subject: Math Type: Short

Question 72:

Evaluate: \( \int \frac{e^x(1+x)}{\cos^2(e^x x)} dx \)

Class: 12 Subject: Math Type: Long

Question 73:

Evaluate: \(\int \dfrac{1}{{{x}^{2}}-9}\)

Class: 12 Subject: Math Type: Long

Question 74:

Evaluate: \(\int \dfrac{3x-1}{\left( x-1 \right)\left( x-2 \right)\left( x-3 \right)}\)

Class: 12 Subject: Math Type: Long

Question 75:

Evaluate: \( \int \dfrac{x}{\left( x-1 \right)\left( x-2 \right)\left( x-3 \right)}\)

Class: 12 Subject: Math Type: Long

Question 76:

Evaluate: \(\int \dfrac{2x}{{{x}^{2}}+3x+2}\)

Class: 12 Subject: Math Type: Long

Question 77:

Evaluate: \(\int \dfrac{1-{{x}^{2}}}{x\left( 1-2x \right)}\)

Class: 12 Subject: Math Type: Long

Question 78:

Evaluate: \(\int \dfrac{x}{\left( {{x}^{2}}+1 \right)\left( x-1 \right)}\)

Class: 12 Subject: Math Type: Long

Question 79:

Evaluate: \(\int \dfrac{x}{{{\left( x-1 \right)}^{2}}\left( x+2 \right)}\)

Class: 12 Subject: Math Type: Long

Question 80:

Evaluate: \(\int \dfrac{3x+5}{{{x}^{3}}-{{x}^{2}}-x+1}\)

Class: 12 Subject: Math Type: Long

Question 81:

Evaluate: \(\int \dfrac{2x-3}{\left( {{x}^{2}}-1 \right)\left( 2x+3 \right)}\)

Class: 12 Subject: Math Type: Long

Question 82:

Evaluate: \(\int \dfrac{5x}{\left( x+1 \right)\left( {{x}^{2}}-4 \right)}\)

Class: 12 Subject: Math Type: Long

Question 83:

Evaluate: \(\int \dfrac{{{x}^{2}}+x+1}{{{x}^{2}}-1}\)

Class: 12 Subject: Math Type: Long

Question 84:

Evaluate: \(\int \dfrac{2}{\left( 1-x \right)\left( 1+{{x}^{2}} \right)}\)

Class: 12 Subject: Math Type: Long

Question 85:

Evaluate: \(\int \dfrac{3x-1}{{{\left( x+2 \right)}^{2}}}\)

Class: 12 Subject: Math Type: Long

Question 86:

Evaluate: \(\int \dfrac{1}{{{x}^{4}}-1}\)

Class: 12 Subject: Math Type: Long

Question 87:

Evaluate: \(\int \dfrac{1}{x\left( {{x}^{n}}+1 \right)}\) [Hint: Multiply numerator and denominator by \(x^{n-1}\) and put \(x^n = t\)]

Class: 12 Subject: Math Type: Long

Question 88:

Evaluate: \(\int \dfrac{\cos x}{\left( 1-\sin x \right)\left( 2-\sin x \right)}\) [Hint: Put \(\sin x = t\)]

Class: 12 Subject: Math Type: Long

Question 89:

Evaluate: \(\int \dfrac{\left( {{x}^{2}}+1 \right)\left( {{x}^{2}}+2 \right)}{\left( {{x}^{2}}+3 \right)\left( {{x}^{2}}+4 \right)}\)

Class: 12 Subject: Math Type: Long

Question 90:

Evaluate: \(\int \dfrac{2x}{\left( {{x}^{2}}+1 \right)\left( {{x}^{2}}+3 \right)}\)

Class: 12 Subject: Math Type: Long

Question 91:

Evaluate: \( \int \dfrac{1}{x\left( {{x}^{4}}-1 \right)}\)

Class: 12 Subject: Math Type: Long

Question 92:

Evaluate: \(\int \dfrac{1}{{{e}^{x}}-1}\) [Hint: Put \(e^x = t\)]

Class: 12 Subject: Math Type: Long

Question 93:

Evaluate: \(\int{\dfrac{xdx}{\left( x-1 \right)\left( x-2 \right)}}\)

Class: 12 Subject: Math Type: Long

Question 94:

Evaluate: \(\int{\dfrac{dx}{x\left( {{x}^{2}}+1 \right)}}\)

Class: 12 Subject: Math Type: Long

Question 95:

Integrate \(x\sin x\)

Class: 12 Subject: Math Type: Long

Question 96:

Integrate \(x\sin 3x\)

Class: 12 Subject: Math Type: Long

Question 97:

Integrate \({{x}^{2}}{{e}^{x}}\)

Class: 12 Subject: Math Type: Long

Question 98:

Integrate \(x\log x\)

Class: 12 Subject: Math Type: Long

Question 99:

Integrate \(x\log 2x\)

Class: 12 Subject: Math Type: Long

Question 100:

Integrate \({{x}^{2}}\log x\)

Class: 12 Subject: Math Type: Long

Question 101:

Integrate \(x{{\sin }^{-1}}x\)

Class: 12 Subject: Math Type: Long

Question 102:

Integrate \(x{{\tan }^{-1}}x\)

Class: 12 Subject: Math Type: Long

Question 103:

Integrate \(x{{\cos }^{-1}}x\)

Class: 12 Subject: Math Type: Long

Question 104:

Integrate \({{\left( {{\sin }^{-1}}x \right)}^{2}}\)

Class: 12 Subject: Math Type: Long

Question 105:

Integrate \(\dfrac{x{{\cos }^{-1}}x}{\sqrt{1-{{x}^{2}}}}\)

Class: 12 Subject: Math Type: Long

Question 106:

Integrate \(x{{\sec }^{2}}x\)

Class: 12 Subject: Math Type: Long

Question 107:

Integrate \({{\tan }^{-1}}x\)

Class: 12 Subject: Math Type: Long

Question 108:

Integrate \(x{{\left( \log x \right)}^{2}}dx\)

Class: 12 Subject: Math Type: Long

Question 109:

Integrate \(\left( {{x}^{2}}+1 \right)\log x\)

Class: 12 Subject: Math Type: Long

Question 110:

Integrate \({{e}^{x}}\left( \sin x+\cos x \right)\)

Class: 12 Subject: Math Type: Long

Question 111:

Integrate \(\dfrac{x{{e}^{x}}}{{{\left( 1+x \right)}^{2}}}\)

Class: 12 Subject: Math Type: Long

Question 112:

Integrate \({{e}^{x}}\left( \dfrac{1+\sin x}{1+\cos x} \right)\)

Class: 12 Subject: Math Type: Long

Question 113:

Integrate \({{e}^{x}}\left( \dfrac{1}{x}-\dfrac{1}{{{x}^{2}}} \right)\)

Class: 12 Subject: Math Type: Long

Question 114:

Integrate \(\dfrac{(x-3){{e}^{x}}}{{{(x-1)}^{3}}}\)

Class: 12 Subject: Math Type: Long

Question 115:

Integrate \({{e}^{2x}}\sin x\)

Class: 12 Subject: Math Type: Long

Question 116:

Integrate \({{\sin }^{-1}}\left( \dfrac{2x}{1+{{x}^{3}}} \right)\)

Class: 12 Subject: Math Type: Long

Question 117:

Integrate \(\sqrt{4-{{x}^{2}}}\)

Class: 12 Subject: Math Type: Long

Question 118:

Integrate \(\sqrt{1-4{{x}^{2}}}\)

Class: 12 Subject: Math Type: Long

Question 119:

Integrate \(\sqrt{{{x}^{2}}+4x+6}\)

Class: 12 Subject: Math Type: Long

Question 120:

Integrate \(\sqrt{{{x}^{2}}+4x+1}\)

Class: 12 Subject: Math Type: Long

Question 121:

Integrate \(\sqrt{1-4x-{{x}^{2}}}\)

Class: 12 Subject: Math Type: Long

Question 122:

Integrate \(\sqrt{{{x}^{2}}+4x-5}\)

Class: 12 Subject: Math Type: Long

Question 123:

Integrate \(\sqrt{1+3x-{{x}^{2}}}\)

Class: 12 Subject: Math Type: Long

Question 124:

Integrate \(\sqrt{{{x}^{2}}+3x}\)

Class: 12 Subject: Math Type: Long

Question 125:

Integrate \(\sqrt{1+\dfrac{{{x}^{2}}}{9}}\)