y(t) = 8t⁵ - 8√t + 2/t.


a) y'(t) = 40t⁴ - 4/t - 2/t²
b) y'(t) = 40t⁴ - 4/t² - 2/t
c) y'(t) = 40t⁴ - 2t(-3/2) + 2/t²
d) y'(t) = 40t⁴ - 2t(-1/2) - 2/t²