Hey all!
I was hoping someone could help me with this proof. Given 1*1 = 1 and -1*-1 = 1 Prove -1*1 =-1.
I thought it would be as simple as stating the multiplicative identity, but my teacher said no.
How might I accomplish it? It's so easy it's hard.
Thanks!
I was hoping someone could help me with this proof. Given 1*1 = 1 and -1*-1 = 1 Prove -1*1 =-1.
I thought it would be as simple as stating the multiplicative identity, but my teacher said no.
How might I accomplish it? It's so easy it's hard.
Thanks!