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Find the total number of parallel tangen...

Find the total number of parallel tangents of `f_1(x)=x^2-x+1a n df_2(x)=x^3-x^2-2x+1.`

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CENGAGE-APPLICATION OF DERIVATIVES-Solved Examples And Exercises
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  8. In the curve x^(m+n)=a^(m-n)y^(2n) , prove that the m t h power of the...

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