July 23, 2014

Posts by vii

Total # Posts: 12

physics(electric forces)
how do i figure out if an electric force between 2 stationary points are positive or negative?

i know this is stupid most likely but i missed a few weeks of lecture bc i was in hospital and i caught up on most of the notes but certain parts have me confuse, does anyone know how to tell if an electric force is negative or positive?

what's the question?

find the grahp of cos(x-2) first and then switch your x and y value, oh another thing with arc cos you have to limit it from one point to another or else its not a function anymore, so say a regular cos has 2pi for its period dont graph that whole 2pi for the arccos graph one ...

its jsut a regular sec graph but you move everything pi/2 to the left

its a regular tangent graph but you move everything over pi/2 to the right

your period is pi i got that by dividing 2pi(which is the regular period for cos and sine) by 2 and then you move everything up 2 and to the right pi

you just plug in 1.7 for N and isolate the x to get the year 1.7mil= 0.05x - 98.45 its simple algebraic manipulation. you move 98.45 to other side by adding it to both side leavign you with 1.7 mil + 98.45= 0.05x and then divide both side by 0.05 to get x by itself imma assume...

by the way you cant factor x^2+ 1 with imaginary i's i believe

cube everything in the parenthesis and you get 8x^3 cube the 2 and you get 8 so you you get 8x^3 + 8x factor out 8x 8x (x^2 +1)

an airplane is traveling horizontally 500 m/s at an altitude of 3000 meters. what's the distance the airplane should drop the bomb so it hits the target on the floor

Algebra II
is this what the problem looks like: (( 3n)^2 - (n/n^2) - 1)/ (n^2 / n+1)?

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