1. ## trigonometric functions

Can someone help me to solve a trigonometric function.To review this function in points

y=3sin(2x+π/4)
(smile)

2. ## Re: trigonometric functions

Solve for what?

3. ## Re: trigonometric functions

Hello...When you say solve you need to give the function a value.

e.g. If you want to find where the function equals 1.5 then you would be solving 3sin(2x + π/4) = 1.5

Otherwise, you would just have a sketch of the function.

Regards

4. ## Re: trigonometric functions

To rewiew that function in points foe example:
1.)domain
2.)0 of function
the period etc

5. ## Re: trigonometric functions

My mistake sorry .I need a sketch of the function and you know extreme values of the function when it is growing

6. ## Re: trigonometric functions

I haven't been clear i need a sketch of this function y=3sin(2x+π/4).I don't get how to know when it is growing, what period does it have extreme values .Thank you for your time

7. ## Re: trigonometric functions

Originally Posted by zotikamaliqi
I haven't been clear i need a sketch of this function y=3sin(2x+π/4).I don't get how to know when it is growing, what period does it have extreme values .Thank you for your time
Use the derivative y', this gives you the function for were y is growing and decreasing. You also use the y' to calculate the extremevalues.