Calculus

prove that the inequality is positive for x-1>0 lne^2*(x^(x+1)) -2x]/(x+1)>=0

Posted by joemauv May 7, 2011 at 3:35 PM via web. Be the first to answer. »

Given f(x)=1/x^2, prove that 1/(k+1)<f(k+1)-f(k)<1/k.

Posted by anneenna April 4, 2011 at 2:51 AM via web. Be the first to answer. »

Verify the inequality (a-b)/sin^2a + sina/cosa<cot b<sina/cos a+(a-b)/sin^2b?

Posted by idaberg March 23, 2011 at 10:37 PM via web. Be the first to answer. »

Prove the inequality ln(x-2)>=2(x-3)/(x-1), x>=3.

Posted by orlovolga March 18, 2011 at 6:02 PM via web. Be the first to answer. »

Verify the inequality |f(a)-f(b)|<4*square root2*|a-b|. 0=<a=<b=<3 f(x)=x*(sin x-cos x)

Posted by catbyshe March 12, 2011 at 1:48 AM via web. Be the first to answer. »

Prove the identity c*a^2*b^3=1 if inequality 2*a^x+3*b^x+c^x>=6, for a,b,c positive.

Posted by sapon March 12, 2011 at 1:02 AM via web. Be the first to answer. »

How to verify the inequality: {(x+1)*lnx}/2>x-1

Posted by for3cast January 21, 2011 at 9:29 PM via web. 1 educator answer. »