document.write( "Question 1180105: Use parametric differentiation to find dy/dx in terms of t, then evaluate dy/dx
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Algebra.Com's Answer #809691 by ikleyn(52781)\"\" \"About 
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document.write( "\"%28dx%29%2F%28dt%29\" = a.\r\n" );
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document.write( "\"%28dy%29%2F%28dt%29\" = b.\r\n" );
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document.write( "          THEREFORE\r\n" );
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document.write( "\"%28dy%29%2F%28dx%29\" = \"%28%28%28dy%29%2F%28dt%29%29%29+%2F+%28%28%28dx%29%2F%28dt%29%29%29\" = \"b%2Fa\".    ANSWER\r\n" );
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document.write( "Notice that the answer does not depend on the value of \"t\".\r\n" );
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document.write( "It is the same for any value of \"t\"; in particular, for t = -1.\r\n" );
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