I need help with his problem. The integral is 2 through X and for Cos t/t solve using the second fundamental theorem? The other one is 1 through 3x^2 for tan t sorry I am new here and dont know how to use the integrand sign.
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Originally Posted by Iron Angel I need help with his problem. The integral is 2 through X and for Cos t/t solve using the second fundamental theorem? Are you tryin' to find the derivative of $\displaystyle f(x)=\int_2^x\frac{\cos t}t\,dt?$ In that case we have $\displaystyle f'(x)=\frac{\cos x}x,$ and we're done. Originally Posted by Iron Angel The other one is 1 through 3x^2 for tan t Apply the same as the previous problem.
yeah that is exactly what i was looking for thanks!!. So on the second one it would be 6x tan 3x^2 because of the chain rule.
That's correct.
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