When , we have , not .
Hi , I need help with the following . The first part is write down the equation of y= f(x) given the sketch attached .
The second part is to sketch the graph of 1+2 f(x - 90)
I don't know if the 180 on the sketch given is correct but i take the sketch given as y=2sin2x
and 1+2 f(x - 90) evaluates to 1-2sin2x . Is this right ?
Thank you
I understand that that at 180 y=2sin2x=0 but has the 180 on the sketch been placed too far to the left .
From observation y=2sin2x would give the minimum as (135,-2) .
What is the equation if you take (180,-2) as the minimum ?
Yes, the image is not clear. However, the minimum point seems to the right of the fifth tick on the x-axis. Therefore, if 180 corresponds to the that tick, then the minimum point has to be > 180 and not 135. The digits "180" themselves seem to be located directly above the minimum.
The first positive minimum point of is 180 iff .