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6.1 Antiderivatives and Slope Fields Objectives SWBAT: 1)construct antiderivatives using the fundamental theorem of calculus 2)solve initial value problems 3)construct slope fields

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Indefinite Integrals Last chapter we dealt with definite integrals (we took an antiderivative and evaluated it between two points). Definite integrals have limits. Indefinite integrals DO NOT have limits. The set of all antiderivatives of a function f(x) is the indefinite integral of f with respect to x and is denoted:

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Example 1: Evaluate each integral.

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Differential Equations A differential equation is an equation containing a derivative. Just like in Algebra, when you want to solve an equation, you use an inverse operation. To “undo” a derivative, we take an antiderivative (integral). Functions have many antiderivatives, all of which vary by a constant. Solving a differential equation involves finding a unique equation that satisfies some initial conditions or initial values (will help us solve for C).

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We don’t have to write the “C” on both sides. When we integrate, we would get a C on the left and a C on the right. We would then need to move the C from the left over to the right to combine our constants. We can think of the C currently on the right as that combination of constants already taking place.

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A Graphical Look at Differential Equations

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Example 7: Suppose that you know that the point (0,-1) is on a particular solution of the differential equation from the previous slide. By following the slopes, draw on the diagram what you think the particular solution looks like. (Note: The graph should follow the pattern of the slope field, but may go between the points rather than through them.

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