## IgorL Group Title How can I solve integral of 2sin(t/2)dt? one year ago one year ago

1. AravindG

put u=t/2 du=1/2 dt the integral becomes integral 2 sin u 1/2 du = integral sin u du

2. EulersEquation

Are you looking for $\int\limits_{} 2\sin(t/2) dt$?

3. IgorL

yes

4. EulersEquation

This one is easy, really. Can you figure out the antiderivative? The antiderivative of sin is what? And the antiderivative then of t/2 is what? You would be using the chain rule to differentiate to get this function.

5. IgorL

I just solved, and it is -4cos(t/2)+c. But I used u substitution.

6. AravindG

Where did 4 come from ?

7. IgorL

when ask my question before, you forget to multiply du by 2. I think you divided by 2 instead of multiply.

8. AravindG

ya u r right ..sorry for that

9. IgorL

ok :)