Graphing The Sum Of Two Functions

3 replies to this topic

#1 duskube

duskube

Newbie

• Members
• 4 posts

• Calculators:

Posted 04 May 2009 - 12:07 AM

I can't seem to find the solution to graph the sum of two functions.
For example, y1=sin(524πt), y2=sin(784πt)
I've tried y3=y1+y2, and it doesn't work. Can you give me some advices?

Thanks!

#2 mintsmike

mintsmike

Casio Freak

• Members
• 115 posts
• Gender:Male
• Location:Great Britain

• Calculators:
fx-5500L, fx-991ES,fx-9860SD (with GII SD OS), Casio Classpad 330, MS Windows Calc, Ubuntu Calc, a Hammer and my Brain!

Posted 04 May 2009 - 08:42 AM

Hi duskube and welcome to the UCF!

You could use functions to do this. First, go into Main mode and type in:

Define f(x)=2x+3 or some other expression
Define g(x)=4x+1 or your second expression.

Then go into graph mode and type y1=f(x)+g(x)

Then you should graph your sheet to find that it displays

y=6x+4.

Hope that this helps,
mintsmike

#3 Kilburn

Kilburn

Casio Technician

• Members
• 491 posts
• Gender:Male
• Location:France
• Interests:Blah

• Calculators:
FX-7500 G

Posted 04 May 2009 - 11:24 AM

y3=y1(x)+y2(x) works as well, if I remember correctly.

duskube

Newbie

• Members
• 4 posts

• Calculators: