Failed to connect to MySQL: Access denied for user 'examnext_online'@'localhost' (using password: YES) A real function f is always positive and satisfying `f(x)/f(y)<=2^((x-y)^2) AAx,y in D` where D denotes domain set of the function. Then f(x) can be - Sarthaks eConnect

A real function f is always positive and satisfying `f(x)/f(y)<=2^((x-y)^2) AAx,y in D` where D denotes domain set of the function. Then f(x) can be

`sqrtx+x^3`

`int_0^(sin^2 x) sin^(-1) sqrttdt+int_0^(cos^2 x) cos^(-1) sqrttdt`

`int_0^x 2t^3dt`

`5/2x^2+x^3-32`