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Question

I: The range of the function f(x)=cos[x] for π2<x<π2 is {1,cos1,cos2}.
II: Every periodic function is one-one function.
  1. only I is true
  2. only II is true
  3. both I and II are true
  4. neither I nor II are true

A
only II is true
B
neither I nor II are true
C
only I is true
D
both I and II are true
Solution
Verified by Toppr

From graph you can find the range & also justify that every periodic function is not one-one function.
52937_28207_ans_b7125cc3d1c844aeac8ec4e0401b34d1.png

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