Recent content by Jbright1406

no, I've never seen jacobian's. I know the name and have heard them mentioned, but have never seen them It says home work, buts it on the bottom of a test review, its not something to turn in, i can post the entire test review if you don't believe me, where it says it at the top of the page...

Homework Statement Let f(x,y,z) be a continuous function. To rewrite f(x,y,z) as a function of spherical coordinates, the conversion x-rcos(\theta), y=rsin(\theta), and z=rcos(\varphi). Suppose S is a region in 3 dimensions. How would you rewrite _{\int\int\int}s f(x,y,z)dV as the integral of a...

huh? i have alpha and beta. alpha is 15 beta is 50

ok, my times up anyways but i still want to figure it out. how do i solve for t in the y direction. cause in m equation i still have d right? i know the quadratic formule is x equals negative b plus or minus the sqr root of b^2-4ac all divided by 2a. i get lost there

Homework Statement A skier leaves the ramp of a ski jump with a velocity of v = 8.0 m/s, θ = 15.0° above the horizontal, as in the figure. The slope is inclined at 50.0°, and air resistance is negligible. (Assume up and right are positive, and down and left are negative.) (a) Find the...

I didnt just drop the 3.3 i added it to the 16.0; i realized where i was mistaken at. check out the edit i just posted after you answered! Thank you for your help though! :-)

Homework Statement A golf ball is hit off a tee at the edge of a cliff. Its x and y coordinates as functions of time are given by the following expressions. x = (16.0 m/s)t y = (3.30 m/s)t - (4.90 m/s2)t^2 Write a vector expression for the ball's position as a function of time, using...

[(1-sinx)(-sinx)-cosx(0-cosx)]/(1-sinx)^2 then (1-sinx)/(1-sinx)^2 then the final being (1)/(1-sinx) PS sorry for the double posting

thats what i kept seeing. i see it simplifies to one. the answer in the book shows the answer i previously gave over (1-sinx)^2 then the final answer being 1 over (1-sinx)

ok, i have this and know what it should simplify to, but why? (1-sin(x))(sin(x))-(cos(x))(0-cos(x)) i know it simplifies to 1-sin(x) but my book doesn't explain what exactly happens. could someone please shed some light and explain what exactly happens

Ok, i know how to convert to and from the metric system and how to convert within, but what exactly am i supposed to do with this. Notice I am not asking for it solved, but guidance on how to solve, bc this seems like a really stupid way for us to have to convert with extra steps added and mixed...

im at the library an ddont have it on the comp. I am tryin to work it on paper but i think I am plugging it it wrong. try this (.23*10+.5*.023*10^2)ihat + (0.46*10+.5*.046*10^2)jhat 3.45 i hat + 6.9 jhat

sorry this is such a big picture, but this is what i have to work with.

damn, i know this stuff should be easy, i think I am thinking about it way to hard and confusing myself.

so if I am looking at it just in a generic way, that is just the length of the line/ magnitude if its a vector