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Please solve RD Sharma Class 12 Chapter 15 Tangents and Normals Exercise Multiple Choice Question , Question 24 maths textbook solution. 

Answers (1)

Answer : (c) is the correct option

Hint : Obtain the slope

Given : y=2 x^{7}+3 x+5

Solution :

y=2 x^{7}+3 x+5                                  (1)

Differentiating (1) w.r.t x

\frac{d y}{d x}=14 x^{6}+3

Here the slope cannot be zero. Hence it make an acute angle with x-axis


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