The solution of the differential equation cos x cos y dx +
sin x sin y dy = 0 is
- 3 Answers
- 23414 Views
- RRB, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / rajasekar
(1) tan x = c
(2) sec x ? sec y = c
(3) sin x = c cos y
(4) cos x = c sin y
| Is This Answer Correct ? | 27 Yes | 8 No |
Answer / yasheen shahi
divide by SINx*COSy throughout.
this gives
(cosx/sinx)dx+(siny/cosy)dy=0
This is nothing but the derivative of
log(sinx)-log(cosy)
| Is This Answer Correct ? | 19 Yes | 7 No |
Answer / sangeetha
cosx/sinx)dx+(siny/cosy)dy=0
This is nothing but the derivative of
log(sinx)-log(cosy)+logc
log(sinx/cosy)=logc
sinx/cosy=c
sinx=c cosy
| Is This Answer Correct ? | 13 Yes | 2 No |
.In a family there are many children , boy have equal no.of brothers&sisters, girl have twice no.of brothers&sisters .Find the no.
A pipe can fill a tank in 30 min B can fill in 28 min then if 3/4 th of tank can be filled by B pipe and after wards both are opened then how much time is required by both the pipes to fill the tank completely.
Modulo(373,7)+round(5.8)+truncat(7.2)-round(3.4)=
Company A owns 40% of the stocks in the XYZ corporation. company B ownz 15000 shares. company C owns all the shares not owned by the companies A or B. How many shares of stock does Company A own if company C has 25% more shares than Company A? a) 450000 b) 50000 c) 750000 d) 60000
Grass in lawn grows equally thick and in a uniform rate. It takes 24 days for 70 cows and 60 days for 30 cows to eat the whole of the grass. How many cows are needed to eat the grass in 96 days?
3 Answers Anna University, CTS, Infosys,
Four Members A, B, C, D are playing a game .A person losing a game should double the amount of others .B, C, D are losing in order after three games .The amount after 3 games are A&B having 40,D is having 16&C 80.What amount did B have?
If A/B = 6/5,then 3A+2B =
What is clearing?
In a colony there are some families. Each of them have children but different in numbers.Following are conditions a> no of adult>no of sons>no of daughters>no of families. b>each sister must have atleast one brother and should have at the most 1 sister. c> no of children in one family exceeds the sum of no of children in the rest families Tell the no of families
Animesh and Anand together got a profit of Rs. 9,600 and they distributed between themselves in the ratio of 5 : 7. What is the share of Animesh? (a) Rs. 4,000 (b) Rs. 5,600 (c) Rs. 4,800 (d) Rs. 5,200 (e) None of these
What was the aggregate of marks obtained by sajal in all the six subjects?
The sum of the digits of a two digit number is 8.When 18 is added to the number, the digits are reversed. Find the number?
English 
