Question

pls help me with dis qtn!!!!!!

Answer 1

a will be the answer

Answer 2

v = β x ^ -2n

dv/dx = a = β(-2n) x ^ -2n-1 x dx/dt 

 = β(-2n) x^-2n-1 x βx^-2n 

= β²(-2n)x^-4-1 

so option 3rd is correct