using composite trapezoidal rule with n=4 how can i get a bound for the error of I=integration tan(x) from x=0 to x=pi/2(adsbygoogle = window.adsbygoogle || []).push({});

i know that the term of error in comp trapezoidal rule is (b-a)/12 h^2 f''(eita)

i got the second derevative of tanx to be 2sec^2 x tanx then i don't know with what value exactly i need to substitute in this function to get the bound.

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# Numerical analysis (composite numerical integration)

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