साइनम फलन (f(x)=\operatorname{sgn}(5-x)) में (x=7) पर मान क्या है?

What is the value of (f(x)=\operatorname{sgn}(5-x)) at (x=7)?

Explanation opens after your attempt
Correct Answer

A. (-1)

Step 1

Concept

At (x=7), (5-x=-2), which is negative. The signum function gives (-1) for a negative input.

Step 2

Why this answer is correct

The correct answer is A. (-1). At (x=7), (5-x=-2), which is negative. The signum function gives (-1) for a negative input.

Step 3

Exam Tip

(x=7) पर (5-x=-2) ऋणात्मक है। साइनम फलन ऋणात्मक इनपुट पर (-1) देता है।

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साइनम फलन (f(x)=\operatorname{sgn}(5-x)) में (x=7) पर मान क्या है? / What is the value of (f(x)=\operatorname{sgn}(5-x)) at (x=7)?

Correct Answer: A. (-1). Explanation: (x=7) पर (5-x=-2) ऋणात्मक है। साइनम फलन ऋणात्मक इनपुट पर (-1) देता है। / At (x=7), (5-x=-2), which is negative. The signum function gives (-1) for a negative input.

Which concept should I revise for this Mathematics MCQ?

At (x=7), (5-x=-2), which is negative. The signum function gives (-1) for a negative input.

What exam hint can help solve this Mathematics question?

(x=7) पर (5-x=-2) ऋणात्मक है। साइनम फलन ऋणात्मक इनपुट पर (-1) देता है।