. An object attached to the end of a spring is oscillating up and down. The displacement of the object, y, in centimeters, is a function of the time, t, in seconds and is given by y=2.4cos(t)-.3y = 2.4 cos ( t ) − .3 . Find the first time it reaches a) .9 centimeters and b) 2.1 centimeters.

answer: on graphs, the open and closed circles, or vertical asymptotes drawn as dashed lines us identify discontinuities.

as before, graphs and tables allow us to estimate at best.

when working with formulas, getting zero in the denominator indicates a point of discontinuity.

when working with piecewise-defined functions, check for discontinuities at the transition points where one piece ends and the next begins.

step-by-step explanation:

b.   e = 7.5h

hope this , lovely!

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6: 4= 3/2

18: 8= 9/4

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