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Find a root of x4x3+10x+7=0 correct up to three decimal places between 2 and 1 by Newten Raphson method.
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Solution:

f(x)=x4x3+10x+7=0

The root lies between 2 and 1,

Let x0=2

f(x)=4x33x2+10

By the Newton - Raphson method,

xn+1=xnf(xn)f(xn)

f(x0)=f(2)=11

f(x0)=f(2)=34

x1=x0f(x0)f(x0)=211(34)

x1=1.6765

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