Recent content by ramses07

so this is what I've come up with, but I'm only getting zeros #include <stdio.h> #include <math.h> int main () { int numbers[20], y[20]; int x; printf("Enter x data set:"); for(x=0;x<20;x++) {scanf("%d",&numbers[x]); x = numbers[x];} y[x] = 5 * numbers[x] + 4...

Homework Statement I'm trying to create a c program that will allow for multiple inputs for a simple linear equation, and will print those values. the program I've created only returns one valueHomework Equations y = mx + b The Attempt at a Solution #include <stdio.h> #include <math.h>...

I'm having a brain fart and I can't figure out xe^-(x-2). I tried integrating by sub., which led me to; U = x^2-4x+4 du = 2x -4 But that doesn't solve it, can anybody tell me ?

Homework Statement im wondering if e^i(x+y) + e^-i(x+y) can be simplified to 2cosxcosy Homework Equations 2cosx= e^ix + e^-ix so i separated e^i(x+y) + e^-i(x+y) into; e^ix(e^iy) + e^-ix(e^-iy) can that become 2cosxcosy?

Homework Statement so I am asked to derive the group velocity of an equation in terms of its frequency and wavelength, but I am stuck at a simple derivative, which is df/d(1/n) where is the frequency and n is the wavelength. Homework Equations the group velocity is dw/dk The...

Homework Statement Which of the following functions, when extended as 2pi periodic function, are equal to their Fourier series? a. F(x) = 2x, pi<x<-pi b. f(x)= 3 abs value (x) Homework Equations none The Attempt at a Solution After i graphed the functions into periodic...

Homework Statement A conducting sphere of radius 0.01 m has a charge of 1.0 × 10–9 C deposited on it. The magnitude of the electric field in N/C just outside the surface of the sphere is Homework Equations E=kq/r^2 EA=q/eo The Attempt at a Solution I tried the first equation...

how do you know what the bounds are?

Homework Statement integrate f(x,y) = sqrt(x^2+y^2) over triangle with vertices (0,0) (0,sqrt2) (sqrt 2, sqrt 2) Homework Equations x= rcosO, y = rsinO x^2+y^2=r^2 The Attempt at a Solution im supposed to use a double integral converted to polar coordinates, so i used...

well basically i found the kinetic energy right as it hits the spring, by using the equation K=U. which would be 1/2mvf^2-1/2mvi^2=-mgh the initial velocity would be zero, so that cancels, and leaves me with 1/2mvf^2=-mgh so i use the kinetic energy produced by the distance from the spring...

[b]1. A block of mass m = 1.6 kg is dropped from height h = 61 cm (height above the spring, not total height) onto a spring of spring constant k = 1820 N/m (Fig. 8-38). Find the maximum distance the spring is compressed. Homework Equations K=-U, since all energy is conserved, work would...