`(d^2x)/(d y^2)` equals

If y=x+e^x , then (d^2x)/(dy^2) is equal to

y=x+e^x , then (d^2x)/(dy^2) is equal to

If y=sinx+e^(x)," then "(d^(2)x)/(dy^(2)) equals

If y=f(x),p=(dy)/(dx) and q=(d^(2)y)/(dx^(2)), then what is (d^(2)x)/(dy^(2)) equal to ?

If y=f(x)p=(dy)/(dx)" and q"=(d^(2)y)/(dx^(2)) . then what is (d^(2)x)/(dy^(2)) equal to ?

(d^(2)x)/(dy^(2)) equals a. ((d^(2)y)/(dx^(2)))^(-1) b. -((d^(2)y)/(dx^(2)))^(-1)((dy)/(dx))^(-3) c. ((d^(2)y)/(dx^(2)))((dy)/(dx))^(-2) d. -((d^(2)y)/(dx^(2)))((dy)/(dx))^(-3)

sqrt(x+y)+sqrt(y-x)=c , then (d^2y)/(dx^2) equals

If y=e^(2x) , then (d^2y)/(dx^2)*(d^2x)/(dy^2) is equal to