a) Find a second degree polynomial approximating the function f(x)= Inx , and passing from the points (1, f(1)),(2, ƒ(2)) and (4, f(4)). b) Approximate ƒ(2.5) using the polynomial in part (a) E,(x)= (x-xo)(x-x,)(x-x2)...(x- xx) (N+1)! c) use the error formula to estimate the error at x=2.5

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Rate of Change

The relation between two quantities which displays how much greater one quantity is than another is called ratio.

Slope

The change in the vertical distances is known as the rise and the change in the horizontal distances is known as the run. So, the rise divided by run is nothing but a slope value. It is calculated with simple algebraic equations as: