Why am I continuously getting this answer wrong for method of undetermined coefficients?
88137
$y''-2y'+y=te^t$ by method of undetermined coefficients
120705
How to find integration with Unknown
49453
Why do I have to solve for $x$ in this proof, if I choose not to find a counterexample?
128340
Getting incorrect results applying Ampere's law
76046
Finding the roots of the unknown function
36207
I am unsure about this question using hermite polynomials and satifying recurrence relations
154067
Not sure how to go about solving this integral
95746
Why aren't these additions of integrals and summations equal?
27668
Finding nonnegative solutions to an underdetermined linear system
68235
Is there a way to solve for an unknown in a factorial?
94589
Why this very simple problem turns to "Indeterminate"?
108445
Am I interpreting this coefficient correctly?
146881
Error/warning when using NSolve for simple equation
157388
Doubt in a certain equation of a research paper
128425
How to obtain numerical solutions of a two-variable equation?
140352
How can I take a sensitive result for this equation?
138756
How to Calculate the Sum of Coefficients in a Polynomial with known Integer Roots