Question

a) (x + 1)(k + 1) = xy+x+y+?​

Answer 1

Answer:

please comment me my answer

Step-by-step explanation:

Given, a=i−k,b=xi+j+(1−x)k and c=yi+xj+(1+x−y)k

Therefore, [

a

b

c

]=

∣

∣

∣

∣

∣

∣

∣

∣

1

x

y

0

1

x

−1

1−x

1+x−y

∣

∣

∣

∣

∣

∣

∣

∣

Applying C

3

→C

3

+C

1

=

∣

∣

∣

∣

∣

∣

∣

∣

1

x

y

0

1

x

0

1

1+x

∣

∣

∣

∣

∣

∣

∣

∣

=1[1+x−x]=1

Thus, [

a

b

c

] does not depend upon neither x nor y.