# Inequality with Max. and Min.value.

## Homework Statement

If $$x,y\in R$$ and $$x+y=1$$.then find max. and Min. value of $$(x^3+1)(y^3+1)$$ (Without using calculus)

## Homework Equations

here $$x+y=1$$ and $$(x^3+1)(y^3+1)$$

## The Attempt at a Solution

I have done using Calculus....