Determine the set of all real values of for which the quadratic equation has no real…

MATHEMATICS · Single correct · A Level · Mathematics · Algebra and Functions · Algebra and Functions

Problem

Determine the set of all real values of

k

for which the quadratic equation

x^{2}+kx+4=0

has no real roots. (a)

|k| = 4

(b)

|k|>4

(c)

|k|<4

(d)

k>4