# Posts by mkcolema

Total # Posts: 18

**calculus**

Thanks Damon. And to Bob and Reiny, I was not asking for answers at all, I assumed that when someone looked at the question they would explain how to do it, not give me the answer. Considering I have all the answers in the back of my book. But thanks.

*March 17, 2009*

**calculus**

9. f(x)= x sqrt(x^2+4) on interval [-5,4] What region does it concave down? What region does it concave up? Max? Min?

*March 17, 2009*

**calculus**

8. f(x)= - 2x^3 + 45x^2 -300x +9 There are 3 intervals (-inf,A], [A,B], [B, inf) where A and B are critical points. Find A and B? For each of the intervals is it decreasing or increasing??

*March 17, 2009*

**calculus**

7. f(x)= 6x^3- 9x^2- 360x - 5 What interval is it decreasing? What 2 intervals is it increasing? What is the local max?

*March 17, 2009*

**CALCULUS**

6. f(x)= 12x^5 + 30x^4 - 160x^3 +4 For this function there are four important intervals:(-inf, A] , [A,B] ,[B,C],[C, inf) where A ,B ,C are the critical numbers. Find A B AND C and at those points do they have a local min, max or neither??

*March 17, 2009*

**calculus**

5. f(x)= -2x^3 + 27x^2 - 108x +10 Value of x and local min? value of x and local max?

*March 17, 2009*

**calculus**

4. f(x)= 7-5x^4 What does x equal? what is the absoloute max?

*March 17, 2009*

**calculus**

f(x)= x^3/x^2-16 defined on the interval [-19,16]. Enter points, such as inflection points in ascending order, i.e. smallest x values first. Enter intervals in ascending order also. What are F(x) TWO vertical asympototes? F(x)is concave up on the region ______ to ________ and ...

*March 17, 2009*

**math**

3/4 solve for y move -4y to the other side: 4y=3x-16 Divide everything by 4: y=3/4x-4

*March 13, 2009*

**math-calc**

nevermind i got it! thanks!

*March 13, 2009*

**math-calc**

I don't understand how to get the min??

*March 13, 2009*

**math-calc**

f(x)=3-3x^2 -3 <= x <= 2 How do you find the absolute max and min value? What does x equal?

*March 13, 2009*

**math-calc**

f(x)=2x^3-36x^2+162x-6 small critical number? Large critical number?

*March 13, 2009*

**math-calc**

f(x)=(5x-4)e^2x How do you find the one critical number??

*March 13, 2009*

**math-calc**

A rectangle is inscribed with its base on the x-axis and its upper corners on the parabola y+1-x^2. What are the dimensions of such a rectangle with the greatest possible area? width? height?

*March 13, 2009*

**math-calc**

Consider the function f(x)= (2x+8)/(6x+3). For this function there are two important intervals: (-inf, A) (A, inf) and where the function is not defined at A . Find A For each of the following intervals, tell whether is increasing (type in INC) or decreasing (type in DEC). ...

*March 13, 2009*

**math-calc**

for x (-12, 10) the function f is defined: f(x)=x^7(x+2)^2 On which two intervals is the function increasing (enter intervals in ascending order)? Find the region in which the function is positive Where does the function achieve its minimum?

*March 13, 2009*

**calculus**

The function 9x+3x^-1 has one local minimum x=?? and one local maximum x=??.

*March 13, 2009*

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