Contrapositive of the statement:
'If a function $f$ is differentiable at $a$, then it is also continuous at $a$', is
If a function $f$ is continuous at $a$, then it is not differentiable at $a$.
If a function $f$ is not continuous at $a$, then it is differentiable at $a$.
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 $a$.
Negation of “Paris in France and London is in England” is
$(p \wedge \, \sim q)\, \wedge \,( \sim p \vee q)$ is :-
The statement $\sim(p\leftrightarrow \sim q)$ is :
Which of the following statements is a tautology?
The negation of the statement $(( A \wedge( B \vee C )) \Rightarrow( A \vee B )) \Rightarrow A$ is