y= 1+cos2x+8sin²x/ sin2x
find y min when x belongs to (0, pi/2)
Answers
Answered by
0
Answer:
Step-by-step explanation:
f(x)=
sin2x
1+cos2x+8sin
2
x
=
sinxcosx
cos
2
x+4sin
2
x
=cotx+4tanx
2
cotx+4tanx
≥
4
⟹f(x)≥4
Minimum value of f(x) is 4
Similar questions