# math 3 3

2 ⁢ x + y - z ( x , y ) ( a b ) a b c d 1 x 3 + x 3 = 1 x 3 + x 3 1 + 5 2 ( a b ) ( a b ) 1 + 5 2 Unrecognized element: mfraction; arguments were: 1 + 5 and 2 ... ... ... ... ... ... ... ... ... x y z x y z x y z x + y + z x + y + z x + y + z x + y + z x ( x ) ( x , y ) arg#1 ... arg#n opening-fence arg#1 sep#1 ... sep#(n-1) arg#n closing-fence opening-fence arg#1 closing-fence opening-fence closing-fence x + y + z (a+b) a + b [0,1) 0 1 f(x,y) f ⁡ x y x + y a n ⁣ i C − π 2