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question mark

Let Φ(x)= 0 ∫3 cos3x dx. The function Φ(x) is
  1. increasing in [0, π]
  2. increasing in [0, π/2]
  3. decreasing in [0, 2π]
  4. decreasing in [-π/2, 3π/2]

Shibashis Mallik , 10 Years ago
Grade 12
anser 1 Answers
Abhishek Singh
dont understand whats the limit of integration?? not written correctly
Last Activity: 10 Years ago
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