Recent content by Laura1321412

Homework Statement Let f(x)= 2x , 0<x<1 , zero elsewhere, be the pdf of X. Compute the cdf of Y=1/X Homework Equations cdf of X = p(X< x) The Attempt at a Solution P(1/X <= y) = P(X <= 1/y) int 2x from 0 to 1/y = x^2 eval from 0 to 1/y = 1/y^2 so the cdf is 1/y^2...

why can't i use something like this on matlab? for a=0:1 for c=0:1 for w=-1:1 for E=-2:2 x=w.*(1+ (a/2)+(c/4)).*2.^E end

Hi, yes, i understand the question pretty well i think I know that the aj will be 0 or 1, and I thought binary then indicated that, Ao = 1? So wouldn't it be x= +/- ( 1 + A1 / 2 + A2 /4 ) 2 ^ E ? wouldn't that mean there would be 2*2*2*5 = 40 solns? Additionally, I think I can solve...

I need to find them using a function i belive... but i can't determine that function i always get matrix errors...

I can't elimate matlab, i am required to use matlab. b= base = 2, p = precision L and U are the boundaries of value exponent L<E<U and the overall equations is x= +/- (a0 + a1/b + a2/b^2)*b^E So i need to find all the x for the given equation. But do it using matlab...

Homework Statement So this should probably be easy, but for some reason I just can't seem to understand matlab, AT ALL. Anywho, Consider a normalized floating point number system with b=2 p=3 L=-2 and U=2 , plot all the numbers in this system in a horizontal line, and observe... lalala...

Great! Thanks for your tips! that will certianly help from running out time on exams haha

Homework Statement A skier leaves the ramp of a ski jump with a velocity of 10.7 m/s, 15.8° above the horizontal. The slope is inclined at 51.3°, and air resistance is negligible. Calculate the distance from the ramp to where the jumper lands. Homework Equations Kinematics ones...

Here exactly what i did,,, sorry i should have written the whole thing out above. time till rocket reaches highest point = Vi(y)/9.8 So, distance from top of mountian to highest point = Vi(y)/2 * Vi(y)/ 9.8 = Vi(y)^2/19.6 Then, distance from ground to highest point = Vi(y)^2/19.6 +3220...

Homework Statement A rocket is shot off a 3220 M high mountian at an angle of 35.3 to the horizontal. The rocket lands 9580 m away from the mountian, what was the initial velocity? Homework Equations y=Vi(y) *t +1/2gt^2 x= t*Vi(x) Vi(y)= sin 35.3 Vi Vi(x)= cos 35.3 Vi The...

OhhhHH, i forgot to multipy the g(x) term on the right by the integrating factor as well... Oh man. THANK you!

Homework Statement dy/dx= (4x sec(2y/x) +y) / x IC: y (1) = pi/4 Homework Equations The Attempt at a Solution So i can split that up into 4xsec(2y/x)/x +y/x = 4sec(2y/x) +y/x and let v= y/x dy/dx = xdv/dx +v 4sec(2v) +v = xv' +v 4sec(2v)=xv' which is...

Homework Statement y'+3y=e^(-3x)*y^4 , IC: y(1) = (12/4e^-3)^(-1/3) Homework Equations Bernoulli Method The Attempt at a Solution So n=4, i can substitue u=y^-3 u'+(-3)(3)u=(-3)e^(-3x) determine an integrating factor of e^-9x, then integrate both sides...

Homework Statement y+4y^2=(y^(4)+x)y', IC: y(1)=1 Homework Equations ? The Attempt at a Solution Ive tried to figure out a substitution that will make this linear, and i can't seem to figure one... I am unsure of how to approach this?

Homework Statement Q) Determine if the set is a vector space under the given operations The set of all pairs of real numbers of the form (1,x) with the operations (1,y)+(1,y')=(1,y+y') and k(1,y)=(1,ky) 2. Homework Equations / Solution Attempt I know the axioms needed in this...