Question

If y = e^x+e^x+.....∞ then dy/dx = ?

A. 1/(1 - y)

B. y/(1 - y)

C. y/(y - 1)

D. none of these

Answer 1

Answer is: B. y/(1 - y)

We can write it as

⇒ y = e^x+y

log y = (x + y) log e

Differentiating