Thursday

April 17, 2014

April 17, 2014

Posted by **Anonymous** on Sunday, December 18, 2011 at 1:06pm.

- Calclus -
**bobpursley**, Sunday, December 18, 2011 at 1:17pmThere is no function here. Is there an equal sign somewhere here? A function? What is your question?

- Calclus -
**Steve**, Sunday, December 18, 2011 at 6:12pmpresumably you meant

y = 6x - 4cos(3x)

y' = 6 + 12sin(3x)

y'' = 36cos(3x)

Now, I'm sure you know all about 1st and second derivatives and how they relate to critical numbers:

y has a max/min where y' = 0 and y'' not zero

y has an inflection point where y'' = 0

y is increasing where y' >. 0

y is concave up when y'' > 0

No go plug and chug

**Related Questions**

Math - 2x^3+3x^2-120x to find the critical numbers I took the derivative which ...

calculus - Please help!! *f(x)= x(x+6)^1/2 find two x intercepts. Then show that...

Calculus - How do you find the critical numbers and the end points of this ...

math - 3x-4=-2(3x+5) 3x-4=-2(3x+5) clear the fraction. 3x-4=-6x-10 add+6x+4 to ...

Algebra - checking problem Use FOIL to multiply: (6x – 1)(3x – 4) 6x*3x + 6x*(-4...

Math- Adv. Alg. w/ Trig. - I need help simplifying this expression: (3x^3y^5 + ...

Math - Can someone please check my answers below for accurateness? The ...

BobPursley..here it is: - Problem 1: (x-2)/(3x+4) - 6x/(x+1) What I did: Common ...

math - simplify (x^2-3x+6)-(36x^2-18x+6/6) (x^2-3x+6)-(6(6x^2-3x+1/6) cancel the...

math,help - Is this trinomial a perfect square x^2-6x+9 if the trinomial starts ...