Functions Question 648
Question: Range of the function $ f(x)={{\sin }^{2}}(x^{4})+{{\cos }^{2}}(x^{4}) $ is
Options:
A) $ (-\infty ,\ \infty ) $
B) {1}
C) (?1, 1)
D) (0, 1)
Show Answer
Answer:
Correct Answer: B
Solution:
$ f(x)={{\sin }^{2}}(x^{4})+{{\cos }^{2}}(x^{4})=1 $ . Hence range $ ={ 1 }. $