Parametric Equations help.

I understand these equations, basically. However whenever I try and enter this particular equation i keep getting error messages and it will not graph.

x=3sin^3t
y=3cos^3t

and yes the cos/sin are both cubed...
Please I don't understand why I cannot graph this...

Question

Parametric Equations help. 

I understand these equations, basically. However whenever I try and enter this particular equation i keep getting error messages and it will not graph. 

x=3sin^3t
y=3cos^3t

and yes the cos/sin are both cubed...
Please I don't understand why I cannot graph this...

amistre64 · Answer

what are you trying to graph it on?

amistre64 · Answer

http://www.wolframalpha.com/input/?i=parametric+x+%3D+3sin%5E3%28t%29%2C+y+%3D+3cos%5E3%28t%29

anonymous · Answer

I have tried on a ti-84 plus graphing calculator and on an online grapher...which is what i need to use because I have to show my teacher an image. would you like the link for what i am using?

anonymous · Answer

http://www.bcalc.net/

amistre64 · Answer

draws up fine for me on that link .... did you make sure to click "parametric" and not "equation" ?

anonymous · Answer

Yes I did. I have done several others just fine. I was not sure how to incorporate the cube correctly...

anonymous · Answer

on my calculator I was have syntax error as well, so I know this was my issue...how would you type that into a calc...just for future reference please?

amistre64 · Answer

in the ti84,  try 3(sin(t))^3 in order to power up a trig function

amistre64 · Answer

also make sure your in "par" mode for a parametric "Y=" setup

amistre64 · Answer

works fine on my ti83

anonymous · Answer

ok thank you, I was trying to cube the sin before the variable.

amistre64 · Answer

lol,  thats just notational jargon by convention.  (....)^k  works for whenever you want to k up antyhing

anonymous · Answer

haha ya, I will remember that now thanks :)

amistre64 · Answer

good luck ;)