г) g'(t) = 5(7t+3)^4(7) - 9(7t-4)^8(-7)/3
д) f'(l) = 4(2l+1)^3(2) (2l-1)^3 + 3(2l+1)^4 (2)
е) f'(x) = 5a(x/a+b)^4
г) g'(t) = 5(7t+3)^4(7) - 9(7t-4)^8(-7)/3
д) f'(l) = 4(2l+1)^3(2) (2l-1)^3 + 3(2l+1)^4 (2)
е) f'(x) = 5a(x/a+b)^4