Among the variations on the graphs of the trigonometric functions are shifts--both horizontal and vertical. Such shifts are easily accounted for in the formula of a given function. Take function f, where f (x) = sin(x) .
The running costs vary from gas to electric. The average running cost for an electric water heater is $550. The average running costs of a gas water heater is $400. The difference in usage price per year is $150.
The cost to run a pool heat pump is $100-$200 per month. Gas Pool Heaters How Much Do Gas Pool Heaters Cost? Propane or Natural, same price. Gas pool heaters are sized according to the size of the pool, or if you have an attached spa that you want to heat to over 100 degrees.