$2\mathrm{.}14$ LAB: Using math functions

Given three floating$-$point numbers x$,$ y$,$ and z$,$ output xz$,$ xy$2,$ the absolute value of y$,$ and the square root of $($xy$)$z$.$

Output each floating$-$point value with two digits after the decimal point, which can be achieved as follows:

printf$("\%0\mathrm{.}2$lf$",$ yourValue$)$;Additional Operators

Consider the NAND operator uarr, which is defined as follows puarrq$-=$not$(p^{{?}^{?}}q).$

$(1)(10$ points$)$ Using truth tables show that ${?}^{{?}^{?}}$ is

associative, i$.$e$.,p^{{?}^{?}}(q^{{?}^{?}}r)-=(p^{{?}^{?}}q{)}^{{?}^{?}}r.$

$(2)(10$ points$)$ Using truth tables show that uarr is not

associative, i$.$e$.,$ puarr$(quarrr).$