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Integrals
Antiderivatives by substitution, parts and partial fractions.
Integration undoes differentiation. The solver shows which technique it uses (the power rule, a u-substitution, integration by parts, partial fractions) and the graph plots the antiderivative F against the integrand f, so you can see that F's slope is f.
పనిరోజులు · integral of x*e^x dx
అడుగు ద్వారా
- \int x e^{x}\, dx
Find an antiderivative.
- u = x,\quad dv = e^{x}\, dx
Integration by parts: ∫u dv = uv − ∫v du.
- du = 1\, dx,\quad v = e^{x}
Differentiate u, integrate dv.
- \int x e^{x}\, dx = x e^{x} - \int e^{x}\, dx
Apply the formula.
- \int e^{x}\, dx = e^{x}
∫ aᵘ du = aᵘ / ln a (for eˣ that is just eˣ).
- = x e^{x} - e^{x}
Combine.
- F(x) = \left(x - 1\right) e^{x} + C
Add the constant of integration.
జవాబు వెల్లడి చేయండి
ఇప్పుడుమీరు ప్రతీ అడుగున, మీరు అడిగేంత వరకు దాక్కున్న జవాబు.
మీరు ఏ పాఠం నేర్చుకున్నారో, ఆ విషయం గురించి ఒక రిపోర్టులో మీరు తీసుకున్న సమస్యలను, మీ సమస్యలను ఒక స్థలంలో పరిష్కరించిన సమస్యలను, మీరు ఈ పేజీ గురించి అడగవచ్చు.
నమోదు చేసుకోండి ప్రవేశించుఇక్కడ వుపయోగించిన చిహ్నాలు
మొదటి శతాబ్దంలోని క్రైస్తవులు కూడా అదే విధంగా భావించారు.
ఎలా: Integrals
- Find an antiderivative.
- Integration by parts: ∫u dv = uv − ∫v du.
- Differentiate u, integrate dv.
- Apply the formula.
- ∫ aᵘ du = aᵘ / ln a (for eˣ that is just eˣ).
- Combine.
- Add the constant of integration.
ప్రశ్నలు
What is a derivative in one sentence?
The slope of the graph at a point, the rate at which the output is changing there. Speed is the derivative of position.
What is an integral in one sentence?
The accumulated total of a rate: the area under the curve. Distance travelled is the integral of speed.
Why are derivatives and integrals opposites?
That is the fundamental theorem of calculus: accumulating a rate and then measuring how fast the accumulation grows gets you back the rate. Integration undoes differentiation up to a constant.
When do I use substitution and when integration by parts?
Substitution when part of the integrand is the derivative of another part (u and du both present). Parts when the integrand is a product of two unrelated kinds of function, a polynomial times an exponential, log or trig function.
ఇంకా Calculus
LimitsDerivativesDefinite integralsTaylor seriesSeries and sumsMaxima and minimaThe chain ruleImplicit differentiationRelated rates and optimisationIntegration techniques: substitution, parts, partial fractionsApplications of integration: area, volume, arc lengthInfinite series and convergence tests