Question

若|x-3|+|y-2|=0,求y/x-xy

Answer 1

若|x-3|+|y-2|=0,求y/x-xy

x=3 y=2

y/x-xy

= 2/3 - 6

= - 5又3分之1

已知m=a/3b+ab/4+3,当a=3,b为a的倒数时,求m的值

b为a的倒数,

∴a=1/b

M=a/3b+ab/4+3

=a^2/3+1/4+3

=3+1/4+3

=25/4