wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Find the range of c for which the line y=mx+c touches the parabola y2=8(x+2).

A
(,4)(4,)
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
(,2[2,)
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
(,4][4,)
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
(,4]
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C (,4][4,)
Ifequationoftangent,Y=m(X)+amforY2=4aXhere,y2=8(x+2)Y=yX=x+2y=m(x+2)+2m=mx+2m+2mc=2m+2mmR=2(m+1m)c4orc44c4ift+1t2fortort+1t2fort0

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Straight Line
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon