is cos(x 2 ) the same as cos (x) 2

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is cos(x²) the same as cos(x)²

Guest Oct 9, 2016

Landry · Answer 1 · 2016-10-09T10:18:01

NO! for example, cos(3^2) = 0.987688340595

While cos(3)^2 = 0.9972609476849878

The first is really cos(9)

while the second is cos(3)cos(3)= 0.998629534755^2

Guest · Answer 2 · 2016-10-09T10:23:09

yes thank you

is cos(x 2 ) the same as cos (x) 2 ​