Variables. 65. j(,)= sin (xy)+ xy is a function o b) three (a) four (d) none of these (c) two 60. which of the following is known as beta nuncero (b) +1(1-x)tld

variables. 65. J(,)= sin (xy)+ xy is a function o B) three (A) four (D) None of these (C) two 60. Which of the following is known as Beta nuncero (B) +1(1-x)tldr (A) -1- x)-lde (D) None of these (C) - a)"d 87. Given that p dr converges if and only if 0