## lilg132 Group Title intergrate want to check if the answer is right 2 years ago 2 years ago

1. lilg132 Group Title

$\int\limits_{}^{}6.6\sin(3x) - 2.5\cos(0.5x)dx$

2. lilg132 Group Title

answer ? ${-6.6 \over 3}\cos(3x) + {2.5 \over 0.5} \sin(0.5x) + c$

3. mathteacher1729 Group Title

Looks good to me. You can always take the derivative of your answer and see if you get the expression inside the integral for problems like this, though. :)

4. lilg132 Group Title

ok thanks alot mate :D

5. lilg132 Group Title

because when i typed it in wolframalpa it gave me a completely different answer https://www.wolframalpha.com/input/?i=integrate+6.6sin%283x%29+-+2.5cos%280.5x%29dx