57
If $\Delta=\left|\begin{array}{lll}a & p & x \\ b & q & y \\ c & r & z\end{array}\right|=16$, then $\Delta_1=\left|\begin{array}{lll}p+x & a+x & a+p \\ q+y & b+y & b+q \\ r+z & c+z & c+r\end{array}\right|=32$.
A
TRUE
B
FALSE
58
The maximum value of $\left|\begin{array}{ccc}1 & 1 & 1 \\ 1 & 1+\sin \theta & 1 \\ 1 & 1 & 1+\cos \theta\end{array}\right|$ is $\frac{1}{2}$.
A
TRUE
B
FALSE