MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping
Menu
Rohit Keshri Grade:
        

1.If xy = 4 ,prove that x(dy/dx + y2) =3y..


2.If y=(ex - e -x/ex +e-x ),dy/dx=1-y2.


3.Ify=(x-1) log(x-1)-(x+1)log(x+1),prove that dy/dx=log(x-1/1+x).

7 years ago

Answers : (1)

Chetan Mandayam Nayakar
312 Points
										

1. y=4/x, thus dy/dx= -4/x2, x(dy/dx + y2) =x(-4/x2 + 16/x2) = 12/x=3y


2.from quotient rule, dy/dx = ((ex+e-x)(ex+e-x)-(ex-e-x)(ex-e-x))/(ex+e-x)2= 1-y2


3) from product rule, dy/dx= (x-1)/(x-1) + log(x-1) - (x+1)/(x+1) -log(x+1) = log((x-1)/(x+1))


 


 

7 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies
  • Complete JEE Main/Advanced Course and Test Series
  • OFFERED PRICE: Rs. 15,900
  • View Details

Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details