No it isn't.
16/C=4
Multiply c on both sides
16=4c
Divide 4 on both sides
Final Answer: 4=c
And so -4 is not the solution of this equation.
Answer:
they are all false
Step-by-step explanation:
Step-by-step explanation:
Since AB=I, we have
det(A)det(B)=det(AB)=det(I)=1.
This implies that the determinants det(A) and det(B) are not zero.
Hence A,B are invertible matrices: A−1,B−1 exist.
Now we compute
I=BB−1=BIB−1=B(AB)B−1=BAI=BA.since AB=I
Hence we obtain BA=I.
Since AB=I and BA=I, we conclude that B=A−1.
