Concept-wise Practice

parameter quadratic MCQ Questions for Class 12

parameter quadratic se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.

Practice Questions

1 questions tagged with parameter quadratic.

यदि \(f:\mathbb{R}\to\mathbb{R}\), (f(x)=ax-2+1), तो कौन सा कथन सत्य है?

If \(f:\mathbb{R}\to\mathbb{R}\), (f(x)=ax-2+1), which statement is true?

Explanation opens after your attempt
Correct Answer

C. यह किसी भी वास्तविक (a) के लिए सर्वाच्छादक नहीं हैIt is not onto for any real (a)

Step 1

Concept

If (a>0), the range is \([1,\infty\)).

Step 2

Why this answer is correct

If (a<0), the range is (\(-\infty,1]\), and if (a=0), only (1) is obtained.

Step 3

Exam Tip

In no case is the range all of \(\mathbb{R}\), so it is not onto. चरण 1: यदि (a>0), तो परास \([1,\infty\)) होगा। चरण 2: यदि (a<0), तो परास (\(-\infty,1]\) होगा और यदि (a=0), तो केवल (1) मिलेगा। चरण 3: किसी भी स्थिति में पूरा \(\mathbb{R}\) परास नहीं बनता, इसलिए सर्वाच्छादक नहीं है।

Open Question Page
Ask Friends
Student Class Required

Select your class first

Quiz questions, daily challenge and practice pages will open according to your selected class. Class 11/12 ke liye stream bhi select karein.