Recent content by science.girl

Have any scholars suggested means of combating the issues of violence and Somali pirates via naval tactics (by the U.S. or other countries), and if so, what are their suggestions? Please, feel free to request clarification if necessary.

Theoretically, memory capacity is bound by the plastic properties of the brain -- the brain's incredible ability to change physically (i.e., create new synapses) in response to learning or damage. There are two types of memory, declarative memory and procedural memory. Declarative memory...

Thank you for the clarification!

By the way, feel free to assume the tilt of the ecliptic relative to the celestial equator is e=23.44 degrees.

I'm writing some code in Python for an astrophysics project, and I need some help. The JPL Horizons website gives the earth-sun vector in the default reference plane "ecliptic and mean equinox of reference epoch". I need to convert this vector (3 vectors, actually, reproduced below) into...

Problem: Find the volume of a solid generated by revolving the region bounded by the graphs of y = x^2 - 4x +5 and y = 5- x about the line y = -1. Attempt: Do I find where the graphs intersect, then make those values the upper and lower bounds for the integral? And could I set the...

Problem: Find the volume of the solid generated by revolving about the line x = -1, the region bounded by the curves y = -x^2 +4x -3 and y =0. Attempt at a Solution: I know that subtracting y = 0 from y = -x^2 +4x -3 will give the area in 1 dimension. So, would you use shells? I'm not...

Ok; I think I understand how to approach this now. I'll get more help from my instructor to be sure. (I completed the assignment before, but wanted to understand for the final.) So, thanks!

Homework Statement Find f'(x), if f(x) = [x^2 * (3x + 2)^(1/3)] / [(2x - 3)3] Where the absolute value symbol surrounds the entire function. Homework Equations N/AThe Attempt at a Solution My attempts don't account for the absolute value of the function. Otherwise, I can still take the...

Ah, that makes sense. One question, though... do I have to solve the original equation for x1 and y1 before substituting into the distance equation? (I just don't see how you set up the circle equation and various points via the distance equation.) From there, though, I know how to find the...

Homework Statement Show that the point (3/5, 4/5) is the closest point on the circle x^{2} + y^{2} = 1 to the point (3, 4). Homework Equations N/A The Attempt at a Solution The only equation that comes to mind is the distance formula... but I don't know what I would show with that...

Ah; makes sense. Thank you for pointing this out!

Thank you for the clarification. =)

Homework Statement Find relative extrema of f(x). f(x) = \int^{x}_{0} (t^{2} -4)/(1 + cos(t)^{2})Homework Equations N/AThe Attempt at a Solution Is this correct? f '(x) = [(x² - 4)/(1 + cos²x)] Now set f '(x) = 0, [(x² - 4)/(1 + cos²x)] = 0 x² - 4 = 0 x = ± 2 f'(x) is changing from negative...

Thanks for the advice, Redbelly98! I appreciate it. :smile: