Figure 4From: Finite difference approach for variable order reaction–subdiffusion equationsUnstable numerical solution of the variable order fractional reaction–subdiffusion equation at \(\lambda= 1\) for \(\Delta x=\frac{1}{40}\), \(\Delta t=\frac{1}{200}\), final time \(T=0.2\), \(\alpha(x,t)=\frac{12-\sin^{3}(xt)}{12}\), the stability condition does not holdBack to article page