Question

x=1 , y=2, z=-1,then find the value of 1/x+1/2y+5/4z​

Answer 1

Answer:

x=1 , y=2, z=-1

1/x+1/2y+5/4z

Putt value of x, y and z

=1/1+1/2(2)+5/4(-1)

=1+1/4+5(-4)

=1+1/4-5/4

=4+1-5/4

=5-5/4

=0/4

=0

Answer 2

Answer:

1/X+1/2y+5/4z

=1/1+1/2x2+5/4x-1

=1/2x9/-4=-9/8