# Question:why can't Maple solve these two linear equations?

## Question:why can't Maple solve these two linear equations?

Maple 2023

is it possible to find why Maple fails to solve these two equations in two unknowns? Has this always been the case? I do not have older versions of Maple to check. The trace shows that it found solution but then itg says no solution was found. This is very strange.

 > interface(version)

 > Physics:-Version()

 > restart;

 > sol:=1/4*exp(-t) * (c2*(-1+exp(4*t)) + c1*(3+exp(4*t))): expand(simplify(sol));

 > eq1:=-3=eval(sol,t=4): expand(simplify(eq1));

 > eq1:=-17=eval(diff(sol,t),t=4); expand(simplify(eq1));

 > infolevel[solve]:=5; solve([eq1,eq2],[c1,c2])

Main: Entering solver with 2 equations in 2 variables

Main: attempting to solve as a linear system

Linear: solving 2 linear equations

Algebraic: # equations is: 2

Main: Linear solver successful. Exiting solver returning 1 solution

solve: Warning: no solutions found

For reference this is the solution given by Mathematica

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