Hello, JOhkonut!
Find the first three positive values of for which
Solve for
. . . . .[1]
. . Then: .
Substitute these into [1].
f(x)=4sin[(pi/2)x]+2
Find the first three positive values of x for wich f(x)=5.
I was able to get one of the answers(0.54) and another on by adding the period (4+0.54=4.54), but i couldnt get the one in between.