Alternative Equation Formats

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MathML

\frac{| f (ψ^{(k)}) - f (ψ^{(k - 1)}) |}{| f (ψ^{(k - 1)}) |} \leq r

\frac{| f (ψ^{(k)}) - f (ψ^{(k - 1)}) |}{| f (ψ^{(k - 1)}) |} \leq r

\[ \frac{|f(\bpsi ^{(k)}) - f(\bpsi ^{(k-1)})|}{|f(\bpsi ^{(k-1)})|} \leq r \]