Question

Solve all these questions, it's urgent then I will Marks as brainlist :-


1. Evaluate lim→0

5 − 7

− 5

(CO-4,BT-V)


2. If y =() =

−

−

show that () = . (CO-4,BT-

III)


3. If =

2

show that





ℎ at x= 0 . (CO-4,BT-III)


4. Establish cos2∅ = 1 + 2 , where 2 = 1 + 2 2 . (CO-3,BT-VI)


5. Show that sin x + cos x will be maximum at x= /4​

Answer 1

Answer:

sorry I don't know how to do this one

Step-by-step explanation:

plz don't report me and mark me as a brainliest