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Constant rule
d/dx (constant) = 0
Power rule
d/dx (axⁿ) = naxⁿ⁻¹
Sum/difference rule
d/dx [f(x) + g(x)] = f'(x) + g'(x)
Product rule
d/dx [f(x)*g(x)] = f(x)g'(x) + f'(x)g(x)
Quotient rule
d/dx [f(x)/g(x)] = [g(x)f'(x) - g'(x)f(x)]/[g(x)²]
Derivative of Sin
d/dx sin(x) = cos(x)
Derivative of Cos
d/dx cos(x) = -sin(x)
Derivative of Tan
d/dx tan(x) = sec²(x)
Derivative of Cot
d/dx cot(x) = -csc²(x)
Derivative of Csc
d/dx csc(x) = -csc(x)cot(x)
Chain rule
d/dx [f(g(x)] = f'(g(x))*g'(x)
Exponential Func. Rule
d/dx eⁿ = n'(eⁿ)
Natural Log Func. Rule
d/dx ln x = 1/x
Limit Definition
lim (h→0) = [f(x+h) - f(x)]/[h]
Concave up
f’’(x) > 0 (slope increasing)
Concave down
f’’(x) < 0 (slope decreasing)