Find the yield to maturity of the following securities:
a) A security paying one thousand dollars in ne year, for which you pay nine hundred twenty six dollars today.
b) A security paying eighty dollars one year fro now and one thousand eighty two years fro now for which you
pay one thousan fifty today
c) A security paying fifty dollars every six months for the next five year (beginning in six months from now), plus the return of the face value of one thousand dollars at the end of the five years, for which you pay one thousand dollars today