Combining functions
You can combine two or more functions to change a number in different ways.
| input | function 1 | function 2 | output | ||
| 7 |  | +4 | x3 | | 33 |
| 8 | | -3 | x5 | | 25 |
| 4 | | x4 | -10 | | 6 |
Can you work out the output from these combined functions?
| input | function 1 | function 2 | output | ||
| 12 | | -3 | x4 | | ? |
| 12 | | x4 | -3 | | ? |
| 8 | | +20 | ÷7 | | ? |
| 7 | | x5 | -5 | | ? |
| -8 | | +50 | ÷7 | | ? |
| 100 | | ÷4 | -5 | | ? |
| 28 | | +20 | ÷8 | | ? |
| -10 | | x5 | +100 | | ? |
| 40 | | -50 | x7 | | ? |
Look at the first two above. The functions are the same but they are carried out in a different order.
Does this make a difference to the output?
Try carrying out some of the other combined functions in a different order to see how the output is affected.
