Trigonometric Expression Derivative (Jee Mains) | ExamDuo
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Higher Order Derivatives
Hard
Trigonometric Expression Derivative
If y =
2 cos 2θ + cos θ
cos 3θ + cos²θ + cos θ
Then value of y'' + y' + y is
SELECT ONE OPTION
A
sec θ (1 – tan³θ)
B
tan θ (sec³θ + 2tan² θ)
C
sec θ (2 sec²θ + tan θ)
D
cot θ (sec³θ + 2tan θ)
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