Let K be the set of all real values of x where the function f(x) = si

1.	Let K be the set of all real values of x where the function f(x) = sin\|x\| – \|x\| + 2(x – π) cos\|x\| is not differentiable. Then the set K is equal to :(1) ϕ(an empty set)(2) {0, π}(3) {π} (4) {0}
Answer» Correct option (2) If the squares of two numbers are equal, then the numbers are equal. Explanation: Contrapositive of p → q is ~q → ~p

Let K be the set of all real values of x where the function f(x) = sin|x| – |x| + 2(x – π) cos|x| is not differentiable. Then the set K is equal to :(1) ϕ(an empty set)(2) {0, π}(3) {π} (4) {0}

Answer»

Correct option (2) If the squares of two numbers are equal, then the numbers are equal.

Explanation:

Contrapositive of p → q is ~q → ~p

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Let K be the set of all real values of x where the function f(x) = sin|x| – |x| + 2(x – π) cos|x| is not differentiable. Then the set K is equal to :(1) ϕ(an empty set)(2) {0, π}(3) {π} (4) {0}

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