Pre-Calculus B, 3rd Hour, Winter 2012: March 2012

Sunday, March 4, 2012

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Direct substitution

example:

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Dividing out

example:

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direct substitution would not work here because when you but -3 in for x the denominator will equal zero.

to use dividing out you would first factor

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(x+3) will cancel out

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now use Direct Substitution

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Rationalizing

example:

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if you use direct substitution...

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first you have to rationalize the sqrt

This is the rendered form of the equation. You can not edit this directly. Right click will give you the option to save the image, and in most browsers you can drag the image onto your desktop or another program.

This is the rendered form of the equation. You can not edit this directly. Right click will give you the option to save the image, and in most browsers you can drag the image onto your desktop or another program.

This is the rendered form of the equation. You can not edit this directly. Right click will give you the option to save the image, and in most browsers you can drag the image onto your desktop or another program.

X cancels out

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This is the rendered form of the equation. You can not edit this directly. Right click will give you the option to save the image, and in most browsers you can drag the image onto your desktop or another program.

now use direct substitution

This is the rendered form of the equation. You can not edit this directly. Right click will give you the option to save the image, and in most browsers you can drag the image onto your desktop or another program.

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