Question

Pls help me...make it clearly

Answer 1

see explanation

Explanation:

Evaluate f(a) by substituting x = a into f(x)

f(a) = a -
`(1)/(a)`

Evaluate f(-
`(1)/(a)`) by substituting x = -
`(1)/(a)` into f(x)

f( -
`(1)/(a)`) = -
`(1)/(a)` -
`(1)/(-(1)/(a) )`

= -
`(1)/(a)` - ( 1 × -
`(a)/(1)`)

= -
`(1)/(a)` + a = a -
`(1)/(a)`

Hence f(a) = f(-
`(1)/(a)`)