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The bank contains 128 questions across formulas, calculations, graphs, scenarios, code, derivatives, and troubleshooting.
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Activation graph lab
Compare curves, derivatives, saturation, and individual outputs.
Formula reference
Linear: f(x)=x Sigmoid: f(x)=1/(1+e^(−x)) Tanh: f(x)=tanh(x) ReLU: f(x)=max(0,x) Leaky ReLU: f(x)=max(αx,x) ELU: f(x)=x if x>0, otherwise α(e^x−1) GELU: f(x)=xΦ(x) Swish/SiLU: f(x)=x·sigmoid(x) Softplus: f(x)=ln(1+e^x) Mish: f(x)=x·tanh(softplus(x)) Softmax: pᵢ=e^(zᵢ)/Σe^(zⱼ)