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Derivative Rules — Complete Calculus Reference

A complete reference of derivative rules and formulas — basic rules, special functions, and inverse derivatives. Use this as a calculus cheat sheet for homework, exams, and quick checks. Each formula links to its definition page where available.

Basic Differentiation Rules

Constant Rule
ddx[c]=0\frac{d}{dx}[c] = 0
Power Rule
ddx[xn]=nxn1\frac{d}{dx}[x^n] = n x^{n-1}
Constant Multiple
ddx[cf(x)]=cf(x)\frac{d}{dx}[c\,f(x)] = c\,f'(x)
Sum Rule
ddx[f(x)+g(x)]=f(x)+g(x)\frac{d}{dx}[f(x) + g(x)] = f'(x) + g'(x)
Difference Rule
ddx[f(x)g(x)]=f(x)g(x)\frac{d}{dx}[f(x) - g(x)] = f'(x) - g'(x)
Product Rule
ddx[fg]=fg+fg\frac{d}{dx}[f g] = f' g + f g'
Quotient Rule
ddx ⁣[fg]=fgfgg2\frac{d}{dx}\!\left[\frac{f}{g}\right] = \frac{f' g - f g'}{g^2}
Chain Rule
ddx[f(g(x))]=f(g(x))g(x)\frac{d}{dx}[f(g(x))] = f'(g(x)) \cdot g'(x)

Exponential & Logarithmic Derivatives

Natural Exponential
ddx[ex]=ex\frac{d}{dx}[e^x] = e^x
General Exponential
ddx[ax]=axlna\frac{d}{dx}[a^x] = a^x \ln a
Exponential (Chain)
ddx[eu(x)]=eu(x)u(x)\frac{d}{dx}[e^{u(x)}] = e^{u(x)} \cdot u'(x)
Natural Logarithm
ddx[lnx]=1x\frac{d}{dx}[\ln x] = \frac{1}{x}
Logarithm Base a
ddx[logax]=1xlna\frac{d}{dx}[\log_a x] = \frac{1}{x \ln a}
Log (Chain)
ddx[lnu(x)]=u(x)u(x)\frac{d}{dx}[\ln u(x)] = \frac{u'(x)}{u(x)}

Trigonometric Derivatives

Sine
ddx[sinx]=cosx\frac{d}{dx}[\sin x] = \cos x
Cosine
ddx[cosx]=sinx\frac{d}{dx}[\cos x] = -\sin x
Tangent
ddx[tanx]=sec2x\frac{d}{dx}[\tan x] = \sec^2 x
Cotangent
ddx[cotx]=csc2x\frac{d}{dx}[\cot x] = -\csc^2 x
Secant
ddx[secx]=secxtanx\frac{d}{dx}[\sec x] = \sec x \tan x
Cosecant
ddx[cscx]=cscxcotx\frac{d}{dx}[\csc x] = -\csc x \cot x

Inverse Trigonometric Derivatives

Arcsine
ddx[sin1x]=11x2\frac{d}{dx}[\sin^{-1} x] = \frac{1}{\sqrt{1-x^2}}
Arccosine
ddx[cos1x]=11x2\frac{d}{dx}[\cos^{-1} x] = -\frac{1}{\sqrt{1-x^2}}
Arctangent
ddx[tan1x]=11+x2\frac{d}{dx}[\tan^{-1} x] = \frac{1}{1+x^2}
Arccotangent
ddx[cot1x]=11+x2\frac{d}{dx}[\cot^{-1} x] = -\frac{1}{1+x^2}
Arcsecant
ddx[sec1x]=1xx21\frac{d}{dx}[\sec^{-1} x] = \frac{1}{|x|\sqrt{x^2-1}}
Arccosecant
ddx[csc1x]=1xx21\frac{d}{dx}[\csc^{-1} x] = -\frac{1}{|x|\sqrt{x^2-1}}

Hyperbolic Derivatives

Hyperbolic Sine
ddx[sinhx]=coshx\frac{d}{dx}[\sinh x] = \cosh x
Hyperbolic Cosine
ddx[coshx]=sinhx\frac{d}{dx}[\cosh x] = \sinh x
Hyperbolic Tangent
ddx[tanhx]=sech2x\frac{d}{dx}[\tanh x] = \operatorname{sech}^2 x
Hyperbolic Secant
ddx[sechx]=sechxtanhx\frac{d}{dx}[\operatorname{sech} x] = -\operatorname{sech} x \tanh x

Special Techniques

Implicit Differentiation
ddx[F(x,y)]=0    solve for dydx\frac{d}{dx}[F(x,y)] = 0 \implies \text{solve for } \tfrac{dy}{dx}
Logarithmic Differentiation
y=f(x)g(x)    lny=g(x)lnf(x)y = f(x)^{g(x)} \implies \ln y = g(x) \ln f(x)
Inverse Function Theorem
(f1)(y)=1f(f1(y))(f^{-1})'(y) = \frac{1}{f'(f^{-1}(y))}
Parametric Derivative
dydx=dy/dtdx/dt\frac{dy}{dx} = \frac{dy/dt}{dx/dt}
Second Derivative (Parametric)
d2ydx2=ddt ⁣(dydx)dx/dt\frac{d^2 y}{dx^2} = \frac{\frac{d}{dt}\!\left(\frac{dy}{dx}\right)}{dx/dt}

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