substitution

### Introduction to definite integrals

by Sal Khan
This video presents the problem of finding the area under a curve as an anti-derivative problem.
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### Definite integrals (part II)

by Sal Khan
This video continues to solve the same area problem by integration.
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### Definite Integrals (area under a curve) (part III)

by Sal Khan
This video explores the area under a different curve and solves it using integration.
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### Definite Integrals (part 4)

by Sal Khan
This video uses the definite integral to compute the areas under a bunch of curves.
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### Definite Integrals (part 5)

by Sal Khan
This video restates the fundamental theorem of calculus and applies it to various area problems.
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### Definite integral with substitution

by Sal Khan
This video solves a definite integral involving trig functions by substitution.
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### Integrals: Trig Substitution 1

by Sal Khan
This video continues solving trig integrals by substitution.
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### Integrals: Trig Substitution 2

by Sal Khan
This video continues looking at trig integrals by substitution.
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### Integrals: Trig Substitution 3 (long problem)

by Sal Khan
This more difficult problem involves various substitution techniques.
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### Introduction to differential equations

by Sal Khan
This video introduces differential equations as an extension to integration.
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