WEBVTT
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it's clear. So a new ranger So we're given
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why is equal to one over one plus x square
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. So we need to find the derivative of this
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and we're gonna use the quotient role, which gives
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us one plus x square. Comes the derivative of
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one minus one times the derivative of one plus X
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square all over one plus x square square. And
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this gives us negative to X over one plus x
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square square. No, we plug in to find
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a slope and we get 1/2 when we substitute the
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equation for why minus 12. 1/2 is equal to
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em. Times X plus one we get Why minus
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one have this equal to 1/2 times X plus one
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. And this becomes why is equal to when have
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X plus one. And for part B, we're
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gonna draw our graph. You don't look like this
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in our tangent line in red