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

Let f(x)=∣ ∣cosxsinxcosxcox2xsin2x2cos2xcos3xsin3x3cos3x∣ ∣, then f(π2) is equal to

A
8
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
6
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
4
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
2
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C 4
f(x)=∣ ∣sinxsinxcosx2sin2xsin2x2cos2x3sin3xsin3x3cos3x∣ ∣+∣ ∣cosxcosxcosxcos2x2cos2x2cos2xcos3x3cos3x3cos3x∣ ∣+∣ ∣cosxsinxsinxcos2xsin2x4sin2xcos3xsin3x9sin3x∣ ∣
f(π2)=∣ ∣110002310∣ ∣+0+∣ ∣011100019∣ ∣=2(13)+0+1(91)=4+8=4

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