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# Calculus math problem help? Evaluate?

Evaluate.

∫ te-7t^2 dt

please provide steps so I know how to do it

### 2 Answers

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- Chandler BingLv 68 years ago
Let u = -7t^2

du = -14t dt ==> tdt = -(1/14)du

∫ te-7t^2 dt = ∫ (e^u)*(-1/14)du = (-1/14)∫(e^u)du

= (-1/14) e^u + C

sub backc u = -7t^2

...= (-1/14)e^(-7t^2) + C

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