Show that -a is the inverse of a for the addition opertion '+' on R and `1/a` is the inverse of `a ne 0` for the multiplication opertion 'x' on R.

Find the multiplicative inverse of 1+i.

The inverse of the proposition (p ^^ ~q) to r is

Find the multiplicative inverse of 2-3i.

Write the multiplicative inverse of 2-3i ?

Show that zero is the identity for addition on R and 1 is the identity for multiplication on R. But there is no identity element for the opertions - : R xxR to R and div : R _(**) xx R_(**) to R _(**).

Show that subtraction and division are not binary opertions on N.

the value of alpha (ne 0) for which the function f(x ) = 1+ ax is the inverse of itself is :

The inverse of the proposition (p ^^ ~q) rarr r is

Find the multiplicative inverse of 2 - 3i .