FunctionHard
Question
The largest interval lying in 
for which the function 
is defined, is
for which the function is defined, isOptions
A.[0, π]
B.
C.
D.
Solution
f (x) is defined if - 1 ≤ 
- 1 ≤ 1 and cos x > 0
or 0 ≤ x ≤ 4 and -
< x <
∴ x ∈
- 1 ≤ 1 and cos x > 0or 0 ≤ x ≤ 4 and -
< x < ∴ x ∈
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