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Popular >

integral from-1 to 1 of 9x^2-1

Solution

\int_{- 1}^{1} 9 x^{2} - 1 d x

Solution

4

Solution steps

\int_{- 1}^{1} 9 x^{2} - 1 d x

Apply the Sum Rule:

\int f (x) \pm g (x) d x = \int f (x) d x \pm \int g (x) d x

= \int_{- 1}^{1} 9 x^{2} d x - \int_{- 1}^{1} 1 d x

\int_{- 1}^{1} 9 x^{2} d x = 6

\int_{- 1}^{1} 1 d x = 2

= 6 - 2

Simplify

= 4

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\int_{2}^{\infty} \frac{5}{x ^{3}} d x

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\int_{0}^{1} 3 x (1 - x y) d y

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\int_{0}^{π} \frac{1}{1 + cos ^{2} ( x )} d x

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\int_{0}^{1} 4 x \cdot e^{- 2 x} d x

integral from 0 to x^4 of cos^2(u)

\int_{0}^{x^{4}} cos^{2} (u) d u

Frequently Asked Questions (FAQ)

What is the integral from-1 to 1 of 9x^2-1 ?
The integral from-1 to 1 of 9x^2-1 is 4