TS EAMCET · Maths · Functions
The domain and range of are respectively
- A and
- B and
- C and
- D and
Answer & Solution
Correct Answer
(B) and
Step-by-step Solution
Detailed explanation
yx=cosx-3 As we know -1≤cosx≤1 ⇒-1-3≤cosx-3≤1-3 ⇒-4≤cos-3≤-2 ⇒yx∈-4,-2 cosx is defined ∀x∈R ⇒ Domain fo yx is R.
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