Question

How many solutions does the equation 4sin2(2x) -1 = 0 have in the interval [0, 2Ï€]?

Answer 1

it is the same ques.

Answer 2

sin^2(2x)=1/4

Answer 3

so there's only one solution?

Answer 4

no wait

Answer 5

http://openstudy.com/users/shubham.bagrecha#/updates/5088ac08e4b004fc96eb86b3

Answer 6

what sol. you got?

Answer 7

\[2x=n \pi \pm \alpha\]
\[x=\frac{n \pi \pm \alpha}{2}\]

Answer 8

now put values of n till your ans. is less than 2 pi.