Consider `f:{4,5,6}->{p ,q, r}` given by `f(4)=p`, `f(5)=q` and `f(6)=r`. Find `f^(-1)` and show that `(f^(-1))^(-1)=f`.

Answer

`ararrrs;brarrs;crarrr;drarrq`

Explanation

(a) graph of f(x)=`|2x-1|+|2x-3|`

Form the graph f(X) has infinite points of minima
(b) f(X)=2sin x-xThus for f(X)=2cosx-1 =0 we have cosx =`1//2` which has infinite points of extrema
(c ) Graph of f(x)=|x-1|+|2x-3|

From the graph f(X) has one point of minima
(d) Graph f(x)=|x|-|2x-3|

From the graph f(X) has one point of maxima