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bobsmith76
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I really don't see how they went from step 1 to step 2 in this example. Any advice would help.
A tangent is a line that touches a curve at only one point, without crossing over or intersecting the curve.
A secant is a line that intersects a curve at two points, whereas a tangent only touches the curve at one point.
Velocity is a measure of the rate of change of an object's position over time. It is a vector quantity, meaning it has both magnitude and direction.
Velocity can be calculated by dividing the change in position by the change in time. This can be expressed as the slope of a line on a position-time graph, or as the derivative of the position function with respect to time.
A rate of change is a measure of how one quantity changes in relation to another quantity. It can be expressed as a slope, derivative, or other mathematical formula.