Question
if
Hint:
In this question, we have given, . Solve this equation and find the general solution for x.
The correct answer is:
Here, we have to find the the general solution for x
Firstly, we have given equation,
So we can write,
x = n π and sin2x = 
-2 sin2 x = 
1 – 2 sin2 x = 
Cos 2x =
2x = 2n π ± cos-1 ()
X = n π ±
cos-1 ()
Therefore, the correct answer is x = n π and x = n π ± cos-1 (). Both options will correct.
In this question, we have to find the general solution of x. Here more than one option will correct. Remember the rules for finding the general solution.
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,
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has
