Question

solve this (class 11)​

Answer 1

Answer:

1/2√a

Step-by-step explanation:

we know that, limx→a (x^n - a^n)/ (x-a) = n×a^(n-1)

using this formula answer is = 1/2 × a^(1/2 -1)

                                               = 1/2 × a^(-1/2)

                                               = 1/2 × 1/√a

                                               = 1/2√a