A: No. You only need Differential Calculus (Calculus I) and basic Partial Derivatives (Calculus III, first two weeks). You do not need Integral Calculus (Calculus II) for 95% of modern ML.
Multivariable calculus and how it feeds into optimization algorithms. PDF Link: Math for ML Summary 4. Calculus and Differentiation Primer (Sebastian Raschka) Sebastian Raschka calculus for machine learning pdf link
[ f'(x) = \lim_h \to 0 \fracf(x+h) - f(x)h ] calculus for machine learning pdf link
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