CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
0
You visited us 0 times! Enjoying our articles? Unlock Full Access!
Question

Let p,q {1,2,3,4}. The number of equation of the form px2+qx+1=0 having real roots is

A
15
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
9
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
7
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
8
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C 7

For real roots, discriminant 0
q24p 0q2 4p
For p=1,q2 4q=2,3,4
p=2,q2 8 q=3,4
p=3,q2 12q=4
p=4,q216q=4
Total seven solutions are possible


flag
Suggest Corrections
thumbs-up
32
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Nature and Location of Roots
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon