Find the zero of fx 5t2 45tSolutionGiven that ft 5t2 45t

Solution

Given that f(t) = 5t² - 45t

The zeros of f are obtained by putting f(t) = 0

That is f(t) = 5t² - 45t = 0

implies that 5t² - 45t = 0

implies that 5t( t - 9 ) = 0

implies that t = 0 or t = 9

Hence the zeros of f(t) = 5t² - 45t are t = 0 and t = 9