Semi-log + Double Log Graphs: "The resistance R of blood flow through a blood vessel is..."

5. The resistance [imath]R[/imath] of the flow of blood through a blood vessel (assumed to have the shape of a cylindrical tube) is given by:

[imath]\qquad R = \dfrac{Kl(\gamma + 1)^2}{d^4}[/imath]

...where [imath]l[/imath] is the length of the vessel, [imath]d[/imath] is its diameter, and [imath]\gamma \geq 0[/imath] is its curvature. The positive constant [imath]K[/imath] represents the viscosity of the blood. In this exercise, we view [imath]R[/imath] as a function of [imath]d[/imath].

(a) Sketch the semilog graph of [imath]R[/imath] (use ln). Label the axes and identify a reasonable domain for [imath]d[/imath].

(b) Sketch the double-log graph of [imath]R[/imath] (use ln). Label the axes and identify a reasonable domain for [imath]d[/imath].




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