What is the integrated form of $\displaystyle \int4cos(5x)dx$ and $\displaystyle \int\frac{4}{cos^2x}dx$? The answers I got are $\displaystyle \frac{4}{5}sin(5x)+C$ and $\displaystyle 4tanx+C$, respectively.
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Are you wanting the process of finding those, or are you just checking to see if the answers are correct? You could just check by differentiating; if you do, you will notice that those are the correct answers.
I thought they were correct, but I'm looking at an old calculus exam of mine and they are marked wrong. I guess I should have said something earlier. Thanks.
Originally Posted by cinder I thought they were correct, but I'm looking at an old calculus exam of mine and they are marked wrong. I guess I should have said something earlier. Thanks. Maybe you did the oldest mistake in the book, you forgot the constant at the end? This is may 1th Post Code: {]-[}(0)(0)/-\{]-[}
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