Develop two user defined functions $($CAPM and WACC$)$ using the following equations;

a$)$ CAPM $=$ RF $+$ Beta $*($RM $-$ RF$)$

b$)$ WACC $=$ Wd $*$ Rd $*(1-$ taxRate$)+$ We $*$ Re

And, test your own functions by using the values given on the sheet $$P$4.$ Remember that these functions must have arguments.