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What is the particular solution to the differential equation 
(dy)/(dx)=((1-y)^(2))/(x+1) with the initial condition 
y(0)=5 ?

What is the particular solution to the differential equation dydx=(1y)2x+1\frac{dy}{dx}=\frac{(1-y)^{2}}{x+1} with the initial condition y(0)=5y(0)=5 ?

Full solution

Q. What is the particular solution to the differential equation dydx=(1y)2x+1\frac{dy}{dx}=\frac{(1-y)^{2}}{x+1} with the initial condition y(0)=5y(0)=5 ?
  1. Separate variables: Separate the variables in the differential equation.\newlineWe want to get all the yy terms on one side and all the xx terms on the other side. We can do this by multiplying both sides by dxdx and dividing both sides by (1y)2(1-y)^2.\newlinedy(1y)2=dxx+1\frac{dy}{(1-y)^2} = \frac{dx}{x+1}
  2. Integrate sides: Integrate both sides of the equation.\newlineWe need to integrate the left side with respect to yy and the right side with respect to xx.\newlinedy(1y)2=dxx+1\int \frac{dy}{(1-y)^2} = \int \frac{dx}{x+1}
  3. Perform integration: Perform the integration.\newlineThe integral of 1(1y)2\frac{1}{(1-y)^2} with respect to yy is 11y\frac{1}{1-y}, and the integral of 1x+1\frac{1}{x+1} with respect to xx is lnx+1\ln|x+1|. Don't forget to add the constant of integration CC.\newline11y=lnx+1+C\frac{1}{1-y} = \ln|x+1| + C
  4. Apply initial condition: Apply the initial condition to find the constant CC. We are given that y(0)=5y(0) = 5, so we can plug in x=0x = 0 and y=5y = 5 into the equation to solve for CC. 115=ln0+1+C\frac{1}{1-5} = \ln|0+1| + C 14=ln(1)+C\frac{1}{-4} = \ln(1) + C C=14C = -\frac{1}{4}
  5. Substitute value of C: Substitute the value of C back into the equation.\newlineNow that we have found C, we can write the particular solution.\newline11y=lnx+114\frac{1}{1-y} = \ln|x+1| - \frac{1}{4}
  6. Solve for y: Solve for y in terms of x.\newlineTo find y as a function of x, we need to solve the equation for y.\newline1y=1lnx+1141-y = \frac{1}{\ln|x+1| - \frac{1}{4}}\newliney=11lnx+114y = 1 - \frac{1}{\ln|x+1| - \frac{1}{4}}

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