Tuesday

March 31, 2015

March 31, 2015

Posted by **Julie** on Friday, March 23, 2012 at 12:08pm.

A) f(x) = 16/x + x^2

B) s(t) = t^4 - 8t^3

- Calculus Grade 12 University -
**Steve**, Friday, March 23, 2012 at 12:20pmA.

f ' = -16/x^2 + 2x

f '' = 32/x^2 + 2

max/min where f'=0 and f''≠0

f'(2) = 0

f''(2) > 0, so f is concave up,

so f(2) = 12 is a minimum

similarly for (B)

**Answer this Question**

**Related Questions**

Please check my Calculus - 1. Find all points of inflection: f(x)=1/12x^4-2x^2+...

Calculus - For any constant c, define the function f_c(x)= x^3+2x^2+cx. (a) ...

Calculus - For any constant c, define the function f_c(x)= x^3+2x^2+cx. (a) ...

Calc - 1. Find values of a,b,c, and d such that g(x) = a(x^3)+b(x^2)+cx+d has a ...

12th Calculus - use the derivative of the function y=f(x)to find the points at ...

Calculus Please Help - Let f(x)=e^(2x)-kx, for k greater than 0. Using a ...

Calculus (pleas help!!!) - Let f(x)=e^(2x)-kx, for k greater than 0. Using a ...

calculus - find the local maximum and minimum values of f using both the first ...

math - A function is given by, f(x,y) = x^4 - y^2 - 2x^2 + 2y - 7 Using the ...

Calculus - Functions? - #1. A cubic polynomial function f is defined by f(x) = ...