कौन सा व्यंजक परिभाषित है?

Which expression is defined?

Explanation opens after your attempt
Correct Answer

A. (\cos^{-1}(-1))

Step 1

Concept

Since \(-1\in[-1,1]\), (\cos^{-1}(-1)) is defined. The other options are outside their domains.

Step 2

Why this answer is correct

The correct answer is A. (\cos^{-1}(-1)). Since \(-1\in[-1,1]\), (\cos^{-1}(-1)) is defined. The other options are outside their domains.

Step 3

Exam Tip

\(-1\in[-1,1]\) इसलिए (\cos^{-1}(-1)) परिभाषित है। अन्य विकल्प अपने डोमेन से बाहर हैं।

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Mathematics Answer, Explanation and Revision Hints

कौन सा व्यंजक परिभाषित है? / Which expression is defined?

Correct Answer: A. (\cos^{-1}(-1)). Explanation: \(-1\in[-1,1]\) इसलिए (\cos^{-1}(-1)) परिभाषित है। अन्य विकल्प अपने डोमेन से बाहर हैं। / Since \(-1\in[-1,1]\), (\cos^{-1}(-1)) is defined. The other options are outside their domains.

Which concept should I revise for this Mathematics MCQ?

Since \(-1\in[-1,1]\), (\cos^{-1}(-1)) is defined. The other options are outside their domains.

What exam hint can help solve this Mathematics question?

\(-1\in[-1,1]\) इसलिए (\cos^{-1}(-1)) परिभाषित है। अन्य विकल्प अपने डोमेन से बाहर हैं।

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