Zia ur Rahman
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 Dec 3 asked Why do we say that two vectors in $R^3$ cannot span $R^2$? Nov 1 awarded Popular Question Oct 5 accepted any number raised to the power of infinity Oct 5 comment any number raised to the power of infinity now thats the answer i was looking for thank you Oct 5 comment any number raised to the power of infinity i am assuming from your answer that if a>1 then limit x--> + infinity or - infinity of a to the power x is = 0 Oct 5 comment any number raised to the power of infinity its confusing, look you said if a>1 then the result will be zero, and you did not told about if a is beteen 0 and 1. Oct 5 comment any number raised to the power of infinity then my question was if we take any number in place of e and do the the same then what happens, if the number is positive and what happens and if the number is negative Oct 5 comment any number raised to the power of infinity and i also asked about limit as x--> + infinity of e to the power x Oct 5 comment any number raised to the power of infinity i mean limit as x--->- infinity of e to the power x Oct 5 asked any number raised to the power of infinity Sep 30 comment evaluation of the definite integral thank you very much sir Sep 30 accepted evaluation of the definite integral Sep 30 comment evaluation of the definite integral derivative with respect to y of this function of x comes out y^2/8 - 2/y^2 now if we put this into the definite integral and suppose it u then we again need to take the derivative with respect to y that comes out du/dy = y/4 +4/y^3 now what i do? Sep 30 awarded Commentator Sep 30 comment evaluation of the definite integral ok now i try to solve this whole question thank you i will contact you if i could not just after five minutes ok? Sep 30 comment evaluation of the definite integral how you did that, x(y)=y^3/24 + 2/y Sep 30 comment evaluation of the definite integral how you got this result x(y)= y^3/24 + 2/y show me Sep 30 asked evaluation of the definite integral May 27 asked How does one compute $\cos((\pi/4)(k-1 ))$? May 2 asked use of differentials