Linear Differential Equation: Solving for M with Integrating Factor of .5

In summary, the conversation is discussing a linear differential equation with an integrating factor of .5. The final answer is M = 48 + (7e^(.5t)-48)e^(-.5t), but there is some confusion over the value of k and the initial condition. The final answer of 55-48e^(-.5t) is incorrect and needs to be corrected.
  • #1
HerpaDerp
6
0

Homework Statement



dM/dT = .5m-24

I know this is a linear differential equation, with an integrating factor of .5
I get my final answer to be M = 48+ke^(-.5t)

Next, when t = 0, M = 7e^(.5t)...

Giving me k = 7e^(.5t) - 48

so to solve for M..

M = 48 + (7e^(.5t)-48)e^(-.5t)

And finally I get 55-48e^(-.5t)=M which I guess isn't right. Anyone help out what I did wrong here?



My final answer that I get is 55-48e^(-.5t), which I guess is wrong. Where did I go wrong?
 
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  • #2
The equation is separable. You don't really need an integrating factor. M=48+ke^(-.5t) is close, but you do you get the (-.5) factor in front of the t? That's wrong. And M=7*e^(.5t) at t=0 is kind of an odd way to state an initial condition. Do you mean M=7 at t=0?
 

1. What is linear differentiation?

Linear differentiation is a mathematical process used to find the rate of change of a linear function. It involves finding the slope of a line at a specific point using the derivative of the function.

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3. How is linear differentiation different from other types of differentiation?

Linear differentiation is a specific type of differentiation that applies to linear functions, which have a constant rate of change. Other types of differentiation, such as power differentiation, involve functions with changing rates of change.

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