Recent content by SpecialOps0

Ohhh ok sorry, but thank you so very much. Still getting use to some problems haha.

So then is it just still concave down?

no, the -6x-6 was the second derivative.

x>-1 = - x<-1 = + at f"(x)= 6x-6 So I'm confused :/

Thanks and I can't see your pictures PiRho.

I'm not sure what to say, it's not clear like what we've done in my class before..I've only seen clear ones such as x^2/3 functions where there is a clear dip.

Also how do I do this problem... rotate region defined by y=(1/4)x^2 and y=2x+1 at x-axis and find volume... do I start off by finding intercepts? x=-.4721 x=8.4721 then do the integral for volume pi*integral of ((2x+1)^2-((1/4)x^2)^2) from -.4721 to 8.4721?

1) so it's decreasing from -infinity to -infinity? 2) conc up at x=-1

Homework Statement Identify the inflection points, local min/max and intervals the graph is rising, falling, conc up/down analytically, support graphically. y=-x^3-3x^2-4x-2 Homework Equations The Attempt at a Solution F'(y)=-3x^2-6x-4 x=-1+/-.5775i F"(y)=-6x-6 x=-1...

Homework Statement The four particles shown below are connected by rigid rods of negligible mass where y1 = 6.60 m. The origin is at the center of the rectangle. The system rotates in the xy plane about the z axis with an angular speed of 5.40 rad/s...

Figured it out. :)

Homework Statement In an electron microscope, there is an electron gun that contains two charged metallic plates 3.05 cm apart. An electric force accelerates each electron in the beam from rest to 9.70% of the speed of light over this distance. (Ignore the effects of relativity in your...

Got it, thanks and I did have an error in my work. I wrote it down to make sure instead of doing it all on the calculator and forgot to change a degree.

[F – mg sin 18]cos 18 = (mv^2)/r = 30x[(2xpix7.94)/38]^2/7.94

Homework Statement (a) A luggage carousel at an airport has the form of a section of a large cone, steadily rotating about its vertical axis. Its metallic surface slopes downward toward the outside, making an angle of 18.0° with the horizontal. A piece of luggage having mass 30.0 kg is placed...