Why in laplace transformers integral starts from zero to infinity

There is a Laplace transform where the integration is performed over (−∞,∞). It is the bilateral Laplace transform (or two sided Laplace transform.)

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step-by-step explanation:

2πrh+2πr²

2 (pie)(radius)(height)+2(pie)(radius)^2

(2,20) means that the 2 is 2 hours and 20 is 20$. so there both 20$ for 2 hours only the same price. like it says. so, the dunk tank and the bounce house are the same price (20$) for the same amount of time (2 hours).

hope i