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| Discussions |
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| Check out the syntax for Function. I would try with Solve: With[{k1 = 5, b = 2}, Solve[y == 1 - Sum[a^k/k! Exp[-a], {k, 0, Infinity}] Sum[ 1/n! Exp[b x] (b x)^n, {n, 0, k1}], x]] but it seems too hard. |
| I think the problem of your function is the `E^(\[Pi]^2/x)` part of the formula. Along with the other functions, some functions go to infinity around 0, some go to zero around 0. This `battle' makes it complicated. You can also try using more digits,... |
| I think this is due to some error / precision loss. You have a complicated function and need to first analyze it a bit analytically, maybe take it apart on simpler components to understand larger behavior. Then you could approach numerical... |