फलन (f(x)=x-2-10x+21) का सममिति अक्ष कौन सा है?

What is the axis of symmetry of (f(x)=x-2-10x+21)?

Explanation opens after your attempt
Correct Answer

A. (x=5)

Step 1

Concept

The axis of symmetry is \(x=-\frac{b}{2a}\). Here (a=1) and (b=-10), so (x=5).

Step 2

Why this answer is correct

The correct answer is A. (x=5). The axis of symmetry is \(x=-\frac{b}{2a}\). Here (a=1) and (b=-10), so (x=5).

Step 3

Exam Tip

सममिति अक्ष \(x=-\frac{b}{2a}\) होता है। यहां (a=1) और (b=-10), इसलिए (x=5)।

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Mathematics Answer, Explanation and Revision Hints

फलन (f(x)=x-2-10x+21) का सममिति अक्ष कौन सा है? / What is the axis of symmetry of (f(x)=x-2-10x+21)?

Correct Answer: A. (x=5). Explanation: सममिति अक्ष \(x=-\frac{b}{2a}\) होता है। यहां (a=1) और (b=-10), इसलिए (x=5)। / The axis of symmetry is \(x=-\frac{b}{2a}\). Here (a=1) and (b=-10), so (x=5).

Which concept should I revise for this Mathematics MCQ?

The axis of symmetry is \(x=-\frac{b}{2a}\). Here (a=1) and (b=-10), so (x=5).

What exam hint can help solve this Mathematics question?

सममिति अक्ष \(x=-\frac{b}{2a}\) होता है। यहां (a=1) और (b=-10), इसलिए (x=5)।