Integrals Class 12 Mcq Test (120701)

Which of the following is true regarding definite integrals?

a) They can be negative.

b) They always evaluate to zero.

c) They represent the area under the curve.

d) They only apply to continuous functions.

If f(x) is an odd function, then the integral \(\int_{-a}^{a} f(x) dx\) is equal to:

a) 0

b) \( 2\int_{0}^{a} f(x) dx\)

c) \( \int_{-a}^{0} f(x) dx\)

d) \( \int_{0}^{a} f(x) dx\)

The integral of \( \sin(x) \cos(x)\) with respect to x is:

a) \(\frac{1}{2}\sin^2(x) + C \)

b) \(-\frac{1}{2}\cos^2(x) + C\)

c) \( -\frac{1}{2}\sin^2(x) + C\)

d) \(\frac{1}{2}\cos^2(x) + C\)

The integral of \(\frac{1}{x^2}\) with respect to x is:

a) \(\ln|x| + C\)

b) \(-\frac{1}{x} + C\)

c) \(\frac{1}{x} + C\)

d) \(-\ln|x| + C\)

Which method is typically used to evaluate integrals of products of functions?

a) Substitution

b) Partial fractions

c) Integration by parts

d) Trigonometric substitution

If \(F(x) = \int_{0}^{x} f(t) dt\), then according to the Fundamental Theorem of Calculus,  F'(x)  is equal to:

a) f(x)

b) F(x)

c) \(\int_{0}^{x} f'(t) dt\)

d) \(\frac{d}{dx} \int_{0}^{x} f(t) dt\)

The definite integral of \(e^x \) from 0 to 1 is equal to:

a) \(e^{-1}\)

b) \(e + 1\)

c) \(e^2 – 1\)

d) \( e^2 + 1\)

The integral \( \int \frac{1}{1+x^2} dx\) can be evaluated using:

a) Trigonometric substitution

b) Partial fractions

c) Integration by parts

d) Substitution

Which technique is most appropriate for evaluating integrals involving rational functions?

a) Substitution

b) Partial fractions

c) Integration by parts

d) Trigonometric substitution

 Integration by parts is most useful when dealing with:

a) Exponential functions

b) Trigonometric functions

c) Polynomial functions

d) Rational functions