1003 MrG What is the Equation of an Ellipse

2607 days ago by MATH4R2013

#1) Graph x^2/25+y^2/9==1 var('y') equ=x^2/25+y^2/9==1;show(equ) equ=equ-x^2/25;show(equ) equ=equ*9;show(equ) plot([sqrt(9-9*x^2/25),-sqrt(9-9*x^2/25)],-5,5,aspect_ratio=1) 
       



#2) Graph x^2+y^2/9==1 plot([sqrt(9*(1-x^2)),-sqrt(9*(1-x^2))],-1,1,aspect_ratio=1) 
       
#3) Graph (x-2)^2/9+(y+3)^2/4==1 plot([-3+2*sqrt(1-(x-2)^2/9),-3-2*sqrt(1-(x-2)^2/9)],-1,5,aspect_ratio=1) 
       
#4) Graph 4x^2+y^2-8*x+4*y+4==0 plot([-2+sqrt(4-4*(x-1)^2),-2-sqrt(4-4*(x-1)^2)],0,2,aspect_ratio=1)