Class 11 Mathematics - Trigonometric Functions - Domain, range, and graphs of trigonometric functions Expert Quiz

Topic Quiz • 1 questions • 25 seconds per question.

Topic question bank 1 Questions
Time Left 00:25 25 sec/question
RewardsCoins + XP
ModeClassic Quiz
Share
Question 1 / 1 0 score
Answered 0/1 Correct 0 Time 00:25

फलन \(f(x)=\cos x\) का परिसर (range) क्या है, जब \(x\in[0,\pi]\)?

What is the range of the function \(f(x)=\cos x\) when \(x\in[0,\pi]\)?

Explanation opens after your attempt
Correct Answer

A. \([-1,1]\)

Explanation

Simple Explanation

अंतराल \([0,\pi]\) में \(\cos x\) लगातार घटता है: \(\cos 0=1\) और \(\cos\pi=-1\)। इसलिए इस अंतराल में \(\cos x\) के सभी मान \(-1\) से \(1\) के बीच आते हैं और दोनों सिरों के मान शामिल हैं; अतः परिसर \([-1,1]\) है। परीक्षा में \([0,\pi]\) पर cosine का मान-परास याद रखें: \([-1,1]\)। / On the interval \([0,\pi]\), \(\cos x\) decreases continuously from \(\cos 0=1\) to \(\cos\pi=-1\). Since both endpoints are included, every value from \(-1\) to \(1\) is attained, so the range is \([-1,1]\). Exam tip: for cosine over \([0,\pi]\), check the endpoint values first; they give the complete range.

Open Question Page
Ask Friends
FAQs

Class 11 Mathematics Quiz FAQs

How many questions are in this quiz?

This topic quiz currently has 1 active questions from the selected topic.

Is there a timer in this quiz?

Yes, the timer uses 25 seconds per question for Expert difficulty and shows the total remaining time on the page.

Can I open each question separately?

Yes, every question has its own SEO-friendly page with answer, explanation and related practice links.