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The solution is:
$$X(t) = K \exp\left(\log\left(\frac{X(0)}{K}\right)\exp(-\alpha t)\right)$$
Can you find a nice differential equation which this solution satisfies?
The solution is:
$$P(t) = \frac{a\exp(bt)}{a-1+exp(bt)}$$
Can you find a nice differential equation which this solution satisfies?
What's My Equation?
Age 16 to 18
Challenge Level 
The solution is:
$$X(t) = K \exp\left(\log\left(\frac{X(0)}{K}\right)\exp(-\alpha t)\right)$$
Can you find a nice differential equation which this solution satisfies?
The solution is:
$$P(t) = \frac{a\exp(bt)}{a-1+exp(bt)}$$
Can you find a nice differential equation which this solution satisfies?
Did you know ... ?
There is a branch of mathematics concerned with solving so-called 'inverse-problems'. In an inverse problem you begin with a solution, or some partial solution, and attempt to construct the equations or theories which might give rise to it. The first solution in this problem is called the Gomperz function and is used to model the size of tumors. Perhaps you might discover the uses for the second solution?
There is a branch of mathematics concerned with solving so-called 'inverse-problems'. In an inverse problem you begin with a solution, or some partial solution, and attempt to construct the equations or theories which might give rise to it. The first solution in this problem is called the Gomperz function and is used to model the size of tumors. Perhaps you might discover the uses for the second solution?
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