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Popular >

integral from-1 to 1 of (3x^2+1)

Solution

\int_{- 1}^{1} (3 x^{2} + 1) d x

Solution

4

Solution steps

\int_{- 1}^{1} 3 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} 3 x^{2} d x + \int_{- 1}^{1} 1 d x

\int_{- 1}^{1} 3 x^{2} d x = 2

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

= 2 + 2

Simplify

= 4

Graph

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Frequently Asked Questions (FAQ)

What is the integral from-1 to 1 of (3x^2+1) ?
The integral from-1 to 1 of (3x^2+1) is 4