Number of real roots

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Number of real roots of the equation

1 + x 1 + x 2 2 + x 3 3 + x 4 4 + x 5 5 + x 6 6 + x 7 7 = 0 \displaystyle 1+\frac{x}{1}+\frac{x^2}{2}+\frac{x^3}{3}+\frac{x^4}{4}+\frac{x^5}{5}+\frac{x^6}{6}+\frac{x^7}{7} = 0


The answer is 1.

Jagdish Singh by jagdish singh , 33, India

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1 solution

Hemang Sarkar
Jul 21, 2014

take first derivative and proceed..

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