## How do you solve definite integrals on a TI 84?

Definite Integrals on the Home Screen The TI-83/84 computes a definite integral using the fnint( ) function. To access the function, press the [ MATH ] button and then scroll up or down to find 9:fnint( . , which evaluates to −2(cos π/4 − cos 0) = −2(√2/2 − 1) = 2−√2, approximately 0.5858.

**How do you do substitution by parts?**

So we followed these steps:

- Choose u and v.
- Differentiate u: u’
- Integrate v: ∫v dx.
- Put u, u’ and ∫v dx into: u∫v dx −∫u’ (∫v dx) dx.
- Simplify and solve.

### How do you know when to use u-substitution?

Always do a u-sub if you can; if you cannot, consider integration by parts. A u-sub can be done whenever you have something containing a function (we’ll call this g), and that something is multiplied by the derivative of g.

**How many methods are used by the substitution rule to evaluate definite integrals?**

two ways

We use the substitution rule to find the indefinite integral and then do the evaluation. There are however, two ways to deal with the evaluation step.

#### How to know when to use you substitution?

– PROBLEM 13 : Integrate . Click HERE to see a detailed solution to problem 13. – PROBLEM 14 : Integrate . Click HERE to see a detailed solution to problem 14. – PROBLEM 15 : . Click HERE to see a detailed solution to problem 15. – PROBLEM 16 : . Click HERE to see a detailed solution to problem 16. – PROBLEM 17 : . – PROBLEM 18 : Integrate .

**How do you solve equation with steps?**

Add (or subtract) a number from both sides

## How to integrate using you substitution?

PROBLEM 1 : Integrate . Click HERE to see a detailed solution to problem 1.

**How to use you substitution?**

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