DAE MATH-123

Applied Mathematics-I

Chapter 1 : Quadratic Equation

DAE Common Technologies | First Year

Multiple Choice Questions

Chapter:01 (Quadratic Equation)

Question 1:

The standard form of a quadratic equation is:

\(a{x^2}+bx=0\) \(a{x^2}=0\) \(a{x^2}+bx+c=0\) \(a{x^2}+c=0\)

Question 5:

The quadratic formula is:

\({\frac{-b\pm{\sqrt{{b^2}-4ac}}}{2a}}\) \({\frac{b\pm{\sqrt{{b^2}+4ac}}}{2a}}\) \({\frac{-b\pm{\sqrt{{b^2}-4ac}}}{2a}}\) \({\frac{-b\pm{\sqrt{{b^2}+4ac}}}{2a}}\)

Question 6:

A second degree equation is known as:

Linear Quadratic Cubic None of these

Question 9:

\(l{x^2}+mx+n=0\) will be a pure quadratic equation if:

l = 0 m = 0 n = 0 Both l, m = 0

Question 10:

If the discrimnant \({b^2}-4ac\) is negative, the roots are:

Real Rational Irrational Imaginary

Question 11:

If the discrimnant \({b^2}-4ac\) c is a perfect square, its roots will be:

Imaginary Rational Equal Irrational

Question 12:

The product of roots of \(2{x^2}– 3x – 5 = 0\) is:

\(-\frac{5}{2}\) \(\frac{5}{2}\) \(\frac{2}{5}\) \(-\frac{2}{5}\)

Question 13:

The sum of roots of \(2{x^2}– 3x – 5 = 0\) is:

\(-\frac{3}{2}\) \(\frac{3}{2}\) \(-\frac{2}{3}\) \(\frac{2}{3}\)

Question 19:

Sum of the roots of \(a{x^2}– bx + c = 0\) is:

\(-\frac{c}{a}\) \(\frac{c}{a}\) \(-\frac{b}{a}\) \(\frac{b}{a}\)

Question 20:

Product of roots of \(a{x^2} + bx – c = 0\) is:

\(\frac{c}{a}\) -\(\frac{c}{a}\) \(\frac{a}{b}\) -\(\frac{a}{b}\)

NOTE
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INSTRUCTOR
MUHAMMAD BIN JAMEEL
BSC ENGG. CIVIL

PBTE | DAE | MATH-123 APPLIED MATHEMATICS-I | MCQs | Chapter : 01 Quadratic Equation