Question

Find the intersections of y=x+2 and y^2=4x

Answer 1

sub x=y-2 into y^2=4x

Answer 2

set equations equal to each other,after solving each for y
y = x+2
y = sqrt(4x)

-> sqrt(4x) = x+2
square both sides
4x = x^2 +4x +4
set equal to 0
x^2+4 = 0
x^2 = -4
x = +-sqrt(-4) = +-2i
No real solution

Answer 3

nice pic dumbcow

Answer 4

heres a graph of both functions so you can see they don't intersect

Answer 5

thanks akshay !
Go Cards

Answer 6

lol dunbcow.. you could have used wolfram for the graph right?

Answer 7

oh yeah..oh well
im new to wolfram

Answer 8

lol you just type the two equations and done every dam thing comes in front of you..
wait a sec here

Answer 9

http://www.wolframalpha.com/input/?i=+y%3Dx%2B2%2C+y^2%3D4x

Answer 10

on adding a dx you also get integral and differential of the terms you want

Answer 11

pretty nice software

Answer 12

lol yea and widely used to

Answer 13

i found, graphcalc.com that i use, it will do 3d graphs as well with 2 variables

Answer 14

wolfram does that too i believe its a all in 1 package.... I know it i used graphcalc before wolfram but now as i get every thing here i shifted to wolfram

Answer 15

ok sweet, i'll prob switch to wolfram then