cos(kθ) differentiated, chain rule version

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a^x differentiated, implicit differentiation version

cos(2θ)=(cos(θ))^2-(sin(θ))^2 PROOF

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e^x differentiated, implicit differentiation version

tan(kθ) differentiated, chain rule version

sin(kθ) differentiated, chain rule version

sin(A-B)=sin(A)cos(B)-cos(A)sin(B) proof - GEOMETRICAL PROOF

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Prove that log_a_(x) = 1 / {log_x_(a)}

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