find the value of p so that lines 1-x/3=7y-14/2p=z-3/2 and 7-7x/3p =y-5/1=6-z/5 are at right angles.
find the value of p so that lines 1-x/3=7y-14/2p=z-3/2 and 7-7x/3p =y-5/1=6-z/5 are at right angles.
A binary operation * is defined on the set R of real numbers by a * b = a + b / 1 + ab. show that * is associative