Differential equation of xdy÷dx-y=0
Answers
Answer:
y = kx
Step-by-step explanation:
Given--->
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x dy / dx - y = 0
To find---> Solution of given differential
----------- equation
Solution--->
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x dy / dx - y = 0
It is a differential equation of first order and first degree
We solve it by seperation of variables
in simple words collecting terms of x at one side and collecting terms of y at other side
Now
x dy / dx = y
x dy = y dx
dy / y = dx / x
Now variables are seperated
Integrating both sides
∫dy / y = ∫ dx / x +c
We have a intregation formula
∫ 1/ x d x =logx
applying it here
=> log y = log x + c
=> log y = logx + logk ,where c= log k
=> log y = log kx
=> y = kx
So y = kx is general solution of differential equation
y=yx
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