Case $1)$ Consider the following boolean function: $R=x+YZ.$ For which value of $R,x$ and $Y,$ we can find the exact value of $Z.$ For example, in the case of $R=x+Z,$ we

can find the exact value of $Z$ when $x=0$ and $R$ can be anything. It means that when $x=0,R=1$ when $Z=1,$ and $R=0$ when $Z=0.$

Case $2)$ what will happen when $R=(x+YZ)o+Z.$