फलन \(y=\sqrt{25-x^2}\) किस वृत्त का ऊपरी अर्धभाग है?

The graph \(y=\sqrt{25-x^2}\) is the upper semicircle of which circle?

Explanation opens after your attempt
Correct Answer

A. \(x^2+y^2=25\)

Step 1

Concept

Squaring gives \(y^2=25-x^2\), so \(x^2+y^2=25\). Because of the square root only the upper part appears.

Step 2

Why this answer is correct

The correct answer is A. \(x^2+y^2=25\). Squaring gives \(y^2=25-x^2\), so \(x^2+y^2=25\). Because of the square root only the upper part appears.

Step 3

Exam Tip

वर्ग करने पर \(y^2=25-x^2\) से \(x^2+y^2=25\) मिलता है। वर्गमूल के कारण केवल ऊपरी भाग आता है।

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Mathematics Answer, Explanation and Revision Hints

फलन \(y=\sqrt{25-x^2}\) किस वृत्त का ऊपरी अर्धभाग है? / The graph \(y=\sqrt{25-x^2}\) is the upper semicircle of which circle?

Correct Answer: A. \(x^2+y^2=25\). Explanation: वर्ग करने पर \(y^2=25-x^2\) से \(x^2+y^2=25\) मिलता है। वर्गमूल के कारण केवल ऊपरी भाग आता है। / Squaring gives \(y^2=25-x^2\), so \(x^2+y^2=25\). Because of the square root only the upper part appears.

Which concept should I revise for this Mathematics MCQ?

Squaring gives \(y^2=25-x^2\), so \(x^2+y^2=25\). Because of the square root only the upper part appears.

What exam hint can help solve this Mathematics question?

वर्ग करने पर \(y^2=25-x^2\) से \(x^2+y^2=25\) मिलता है। वर्गमूल के कारण केवल ऊपरी भाग आता है।