There is a multivariate joint PDF like below And these random variables can be written two vectors such as ( K=left[X_{1} X_{2} ight]^{prime} ) and ( M=left[X_{3} X_{4} ight]^{prime} ). ( K ) and ( M ) vectors are independent with PDFs, [ f_{k}(k)=left{egin{array}{cr} a & 0 leq k_{1}, k_{2} leq 1 \ 0 & ext { otherwise } end{array}, quad f_{M}(m)=left{egin{array}{lr} mathrm{b} & 0 leq m_{1}, m_{2} leq 1 \ 0 & ext { otherwise } end{array} ight. ight. ] Which of the followings must be placed the gap into the multivariate joint PDF above ( left(f_{x_{1} ldots} x_{4}left(x_{1} ldots x_{4} ight) ight) ) ? Ltfen birini sein: a. ( a^{2} b^{2} ) b. ( a+b ) c. ( sqrt{a b} ) d. ( a * b )

There is a multivariate joint PDF like below otherwise And these random variables can be written two vectors such as K={X1X2} and M=[X3X4]:K and M vectors are independent with PDFs, fk(k)={a00k1,k21otherwise,fM(m)={b00m1,m21otherwise Which of the followings must be placed the gap into the multivariate joint PDF above (fx2x4(x1x4)) ? Ltlen birini sein: a. a2b2 b. a+b c. ab d. ab