IIT JEE , AIEEE Forum - Mathematics , Integral Calculus

niki_07

by trapezoidal rule,the value of the integral _{[1 ]}

dx/x^3^{[ 3]} [taking n=1]is

a.0681 b.0581 c.0.781 d..481

solve this and wat is trapezoidal rule?

hash_include

i think this should help u.. its basically an approximation of a definite integral..
and wrt ur sum, are u sure the limits of the integral are right? coz by trapezoid rule, the answer is way way different...

Let I= _[1]

^[3]dx/x^3

here f(x) = 1/x^3 ; a = 1; b=3

I = (3-1) * (1/1 + 1/27)/ 2 = 28/27

which obviously doesnt match wid any of ur choices, so.....

Ask & Discuss Questions with Community & Experts