Not every relation is a function. But every function is a relation. Function is just a part of relation.
The cubic function.
Range
A formula or graph are two ways to describe a math function. How a math function is described depends on the domain of the function or the complexity of the function.
The Mandelbrot graph is generated iteratively and so is a function of a function of a function ... and in that sense it is a composite function.
Treadle treadle
You would pump the treadle up and down as you sewed.
This is the kind of non-electric sewing machine that isoperated by a treadle, or rocking type of platform to make the needle move.
This is the kind of non-electric sewing machine that isoperated by a treadle, or rocking type of platform to make the needle move.
A foot treadle was used, a belt was used to transfer the energy from the treadle to the shaft on the machine.
what do you mean
Yes
The company that originally made the belt for the treadle sewing machine can provide a new belt. Look for the name of the manufacturer on your treadle machine, and if that company is no longer in business, inquire of the Singer company that may be able to provide a similar belt.
Your feet on the pedal and your hand on the wheel. Everything on a treadle is manual. Some people put one foot on the back and one foot on the front of the treadle pedal when they are making the machine work. Treadle sewing takes a lot of practice! The pedal is attached to the sewing machine with a leather belt wrapped around a large wheel that is then wrapped around the wheel on the sewing machine.
I am sorry but I only know that they are powered by people and have to do with irrigation.
The treadle valve.
i have a treadle style broom machine not sure of the year i think its pre 1840. You could look on the antique section of ebay, or talk to your local antique dealer.