Hi, i am not to sure if i got this in the right section, but i was wondering if anyone could help me with this question below. If anyone can get me started on this or give me pointers on how to go about it.

A firms prodution function isQ(x,y,z) = 7*(Square root(x))*ln(4y) + 2ln(x+1), wherex,y,zare positive quantities of three inputs.

alsoTis the largestsubsetofR^3 positive. (couldnt get the symbol for R^3, sorry).. on whichQis aconcave.

I need to find, in its simplest form, an inequality that definesT

Thanks