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sr[r_] = A + B r^-2;(*stress function*)
c1 = 10;(*edge condition at a*)
a = 1;(*location of edge*)
sa = 10;(*stress on the edge r=a*)
Solve[{
`sr[a] == sa,
sr[0]!=\[Infinity]}, {A,B}] (*B should be zero and A should be sa*)

This is the code. It is a simple equation with 2 unknown constants A,B and 2 equations (edge conditions). The problem is that I know the solution, but i don't know how to program Solve function/equation, because of the inequality with infinity, solve returns an error (shown on the picture below).

enter image description here

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    $\begingroup$ You didn't show the inequality! $\endgroup$
    – Ulrich Neumann
    Commented May 17, 2022 at 15:33
  • $\begingroup$ It is inside solve - one of the conditions is that stress sr[0] can't be infinity. So A + B/0^2 != infinity. The only way this is possible if B is zero, but mathetmatica only encounters problem of dividing with zero. $\endgroup$
    – U.Grammy
    Commented May 18, 2022 at 10:43

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