Contrapositive o the statement : 'If a function f is differentiable at a, then it is also continuous at a', is :
If a function f is not continuous at a, then it is not differentiable at a.
If a function f is continuous at a, then it is differentiable at a.
If a function f is not continuous at a. then it is differentiable at a.
If a function f is continuous at a, then it is not differentiable at a.
For an integer n, if n is even, then n3 – 1 is odd
For an integer n, if n is even, then n3 – 1 is even.
For an integer n, if n3 – 1 is not even, then n is not odd
For an integer n, if n is odd, then n3 – 1 is even.