if f(x)=cospix, find the extact value of a such that f(1)-f(-1)/1-(-1)=cos a.

If y varies inversely with x and y=11 when x=3 find the equation that relates x and y.

Explain why f(x)=sinx is an odd function.

Evaluate sec(4x) tan(4x)dx Select one: sec(4x) a. +C sec(z) b. +C 4 C. sec(4x) + C d. 4 sec(4x) + C

Plot the graphs of f(x) = x(x - 3) (x + 3) and g(x) = cos 2 x together on the same set of axes and over the interval [-20, 20]. Use the PlotRange option to adjust the range of the viewing window so that their points of intersection are visible.

For f(x)=cosx+sinx, determine all of the values of x for which f(x)=0

Write yx+49 as a function of 0, where 0<0<-, by making the substitution x=7 tan 0. + 49 = Continue Type here to search 立

Use the formula to express h as a function of x if h = 3y-2/4y and y= x-4