Lulzx Lulzx

Keybase proof

I hereby claim:

I am lulzx on github.
I am lulzx (https://keybase.io/lulzx) on keybase.
I have a public key ASDA9wesgUb092VtWiMCnPM7a9WSG3MLl4y9r-KoZSFEaAo

To claim this, I am signing this object:

Solve ( d^2 y(x))/( dx^2) + y(x) = 0:

Assume a solution will be proportional to e^(λ x) for some constant λ. Substitute y(x) = e^(λ x) into the differential equation: ( d^2 )/( dx^2)(e^(λ x)) + e^(λ x) = 0

Substitute ( d^2 )/( dx^2)(e^(λ x)) = λ^2 e^(λ x): λ^2 e^(λ x) + e^(λ x) = 0

Factor out e^(λ x):

	<?php
	$servername = "localhost";
	$username = "username";
	$password = "password";
	$conn = new mysqli($servername, $username, $password);
	if ($conn->connect_error)
	{
	die("Connection failed: " . $conn->connect_error);
	}
	echo "Connected successfully";

	import os
	import sys
	import signal
	import subprocess

	currentPID = os.getpid()
	if 'pid' not in os.listdir():
	with open('pid', mode='w') as f:
	print(str(currentPID), file=f)
	else:

	const puppeteer = require('puppeteer');
	(async () => {
	const browser = await puppeteer.launch()
	const page = await browser.newPage()

	await page.waitForSelector('.main_wrapper > .form > #form1 > p > #username')
	await page.click('.main_wrapper > .form > #form1 > p > #username')

	await page.waitForSelector('.main_wrapper > .form > #form1 > p > #password')
	await page.click('.main_wrapper > .form > #form1 > p > #password')

	#include <stdio.h>

	int count(int l, int r, int n, int m)
	{
	int count = 0;
	for (int i = l; i <= r; i++) {
	int sum = 0, x = i, t;
	t = (i % m);
	while (x != 0) {
	sum += x % 10;

	#include <stdio.h>

	int main(){
	int i;
	scanf("%d", &i);
	while(i != 1){
	printf("%d → ", i);
	if(!(i % 2)){
	i /= 2;
	}

	#include <stdio.h>

	void check(int matrix, int rows, int columns){
	printf("%d", matrix[0][0]);
	}

	int main(){
	int rows, columns, n, matrix[1000][1000];
	scanf("%d%d", &rows, &columns);
	for(int i = 0; i < rows; i++){