find all lengths of time you must spend jumping to reach the maximum height in the interval [0,10]

Question

theres an equation H(t)=-.6((2pi/2.5)t)+1

Answer 1

H(0) = 1

H(10)= 1-4.8pi = -14.0796

for any t > 0, H(t) <1

1 is the max

t=0 gives the max height = 1

Or if by chance you left out a / just before t

then t=10 gives the maximum height of 0.849