Given the following code, answer the question.

function $[z,v]=$getvals$(x,y)$

$z=x+y$

$v=$cal$\frac{c}{a}bs(x,y)$;

end

function $v=$cal$\frac{c}{a}bs(x,y)$

$v\frac{?}{a}=bs(x^{**}y)$;

end

In the Matlab command:

$=>[a,b]=$getvals$(4,-6)$

What are the values of a and $b?$