Mathematics Homework Help
Mathematics Homework Help. In a certain country, the tax on incomes less than or equal to €20,000 is 10%.
For incomes that are more than €20,000, the tax is €2000 plus 40% of the amount over€20,000.
f(x) =
| if 0 ≤ x ≤ 20,000 | |
| if x > 20,000 |
(b) Find
f −1.
f −1(x) =
| if 0 ≤ x ≤ 2000 | |
| if x > 2000 |
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