MIN & MAX? (Pls show all the sequences for better understanding) ☺?

Find the maximum and minimum values of (i) cos X-sin X, (ii) 3sin X+4 cos X, (iii) 2x-tan X, for values of x between o and π.

Ans:
1. MAX: √2; MIN:-√2
2. MAX:5; MIN:-5
3. MAX:(π/2)-1; MIN:(3π/2)+1
2 answers 2