Question

问3个数学题 1.Find a formula for the inverse of the function.f(x)

Answer 1

1.f(x) = e^x 的反函数为(lnx)^(1/9)

2.y = 9x^3+8 的反函数为y = [(x-8)/9]^(1/3)

3.(a)ln(ln(x)) = 1

lnx = e

x = e^e

(b) e^(ax) = Ce^(bx)

ax = bx + lnC

(a-b)x = lnC

x = (lnC)/(a-b)