NDSolve::ndsss
NDSolveValue::ndsss
ParametricNDSolve::ndsss
ParametricNDSolveValue::ndsss
The value of the StartingStepSize option cannot be a symbol:
NDSolve[{f'[x] == f[x], f[1] == 1}, f, {x, 1, 2}, StartingStepSize -> x]This shows a valid value for the StartingStepSize option:
NDSolve[{f'[x] == f[x], f[1] == 1}, f, {x, 1, 2}, StartingStepSize -> 0.1]