Business Calculus
A function f(x)f\(\left\)(x\(\right\)) has the following properties:
f′(x)>0f^{\(\prime\)}\(\left\)(x\(\right\))>0 and f′f^{\(\prime\)}′(x)>0^{\(\prime\)}\(\left\)(x\(\right\))>0, for x>4x>4
Which of the following is a possible graph of f(x)f\(\left\)(x\(\right\))?
Graph the function f(x)=6−6x23+x83f\(\left\)(x\(\right\))=6-6x^{\(\frac\)23}+x^{\(\frac\)83}. The first and second derivative are given.
f′(x)=−4x13+83x53f^{\(\prime\)}\(\left\)(x\(\right\))=-\(\frac{4}{x^{\frac13}\)}+\(\frac\)83x^{\(\frac\)53}
f′′(x)=43x43+409x23f^{\(\prime\]\prime\)}\(\left\)(x\(\right\))=\(\frac{4}{3x^{\frac43}\)}+\(\frac{40}{9}\)x^{\(\frac\)23}
Graph the given classical curve using analytical methods.
y2=x3−2x+3y^2=x^3-2x+3 ; dydx=3x2−22y\(\frac{dy}{dx}\)=\(\frac{3x^2-2}{2y}\)
In a computer simulation, a drone is programmed to always fly directly towards a moving target. The target moves north from a specific point at a constant speed of 11 unit per time step. The drone starts its pursuit 33 units east of the starting point of the target, moving at a speed of s>1s > 1 unit per time step. The path followed by the drone is given by the equation y=s2[xs+1ss+1−xs−1ss−1]+ss2−1y=\(\frac{s}{2}\[\left\]\lbrack\[\frac{x^{\frac{s+1}{s}\)}}{s+1}-\(\frac{x^{\frac{s-1}{s}\)}}{s-1}\(\right\]\rbrack\)+\(\frac{s}{s^2-1}\). For a simulation where s=3s = 3, what is the yy-coordinate of the drone's position when x=8x = 8 units? Also, plot the graph for s=3s = 3.
The first derivative of a continuous function g(x)g\(\left\)(x\(\right\)) is g′(x)=2x(x−2)2g^{\(\prime\)}\(\left\)(x\(\right\))=2x\(\left\)(x-2\(\right\))^2. Find the second derivative of g(x)g\(\left\)(x\(\right\)) and sketch the general shape of its graph.