Question

please give me answer​

Answer 1

Step-by-step explanation:

1) none of these

No need to calculate. It is very clear that all things are getting added.

and when you put y as positive value

Answer will never be zero

2) I don't know this part.

Answer 2

1. Option (c) : Just differentiate y with respect to x. Here , y1 = 1st differentiation & y 6 = 6th .

2. Option (b)

Check the attached image.