## sara1234 Group Title explain how to Find the amplitude of y = 3 sin x. one year ago one year ago

1. surdawi Group Title

y = A * sin(bx) A = amplitude what is it?

2. sara1234 Group Title

3

3. surdawi Group Title

you got it see how easy it was

4. sara1234 Group Title

Describe the transformations required to obtain the graph of the function f(x) from the graph of the function g(x). f(x) = 9 cos x; g(x) = cos x

5. surdawi Group Title

what do you multiply g(x) to get f(x)?

6. sara1234 Group Title

9

7. sara1234 Group Title

A.Horizontal stretch by a factor of 9 B.Vertical stretch by a factor of 9 C.Horizontal shrink by a factor of 1over9 D.Vertical shrink by a factor of 1over9

8. surdawi Group Title

B.Vertical stretch by a factor of 9

9. surdawi Group Title

you can graph them and see the change

10. sara1234 Group Title

how do you graph y=2/3sin1/2x

11. surdawi Group Title

2/3 is the amplitude correct? plug in values for x y=2/3sin1/2x x=0; y = 0 can you try it then i will go over it with you

12. sara1234 Group Title

this is a differnt question it says find thet graph that goes with y= 2 --- sin 1 3 ---- 2 x

13. surdawi Group Title

is that the question?$\frac{ 2 }{ 3 }*\sin(\frac{ 1 }{ 2x })$

14. surdawi Group Title

sara you there?

15. sara1234 Group Title

its not 2x its 1/2 x

16. sara1234 Group Title

1 --- x 2

17. surdawi Group Title

ok amplitude is 2/3 period is $0 \le x \le \frac{ 2*\Pi }{ 1/2 }$

18. sara1234 Group Title

19. sara1234 Group Title

20. surdawi Group Title

plug in 0 what do you get $\frac{ 2 }{ 3 }*\sin{\frac{ 1 }{ 2 }*0}$

21. surdawi Group Title

+ you have the amplitude; which graph shows the right amp?

22. sara1234 Group Title

how do i know which graph shows 2/3

23. surdawi Group Title

all graphs has marked where 1 is