Question

please show all work and circle answer if you cant do all the parts please don't answer question

part 1)

Let g(x,y)=cos(8x+5y). Evaluate g(1,−2). Answer: g(1,−2)=

part 2)

Suppose f(x,y)=xy^2−8. Compute the following values: f(4,3) = f(3,4) = f(0,0) = f(−1,3) = f(t,2t) = f(uv,u−v) =

part 3)

Consider the concentration, C, (in mg/liter) of a drug in the blood as a function of the amount of drug given, x, and the time since injection, t. For 0≤x≤6 mg and t≥0 hours, we have C=f(x,t)=24te^(−(6−x)t) f(2,4)=

part 4)

A car rental company charges a one-time application fee of 30 dollars, 45 dollars per day, and 10 cents per mile for its cars. (a) Write a formula for the cost C, in dollars, of renting a car as a function of the number of days d and the number of miles driven, m. C= (b) If C=f(d,m) then f(5,700)=

Answer 1