Can someone explain question 122 in 5.5 to me alittle better than the book?
Operation theta is defined by the equation a theta b = (a-b)/(a+b), for all numbers such that a does not equal -b. If a does not equal -c and a theta c = 0, then c =
(a) -a
(b) -1/a
(c) 0
(d) 1/a
(e) a
Operation theta is defined by the equation a theta b = (a-b)/(a+b), for all numbers such that a does not equal -b. If a does not equal -c and a theta c = 0, then c =
(a) -a
(b) -1/a
(c) 0
(d) 1/a
(e) a
