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- Thread starter cscott
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On top of "Trace", click on "Calc."

Go through the menu, look for intersect, and follow the instructions.

(The menu titles might not be exact, I dont have one in front of me)

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z-component said:

I want to do the opposite of what you described! I need the x value for a given y value. Thanks anyway.

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Basically, he wants to solve for f(x)-k=0. So he can either plot f(x)-k, and look for where it crosses the x-axis (I dont remember if a function does that), or make two curves, f(x) and k, and find the x-coordinate of their intersection. Their intersection is where f(x)=k.

Another way would be to go into the solver (i dont remember where it is to be honest, hopefully you know...), which solves equations for you.

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tmc said:

Basically, he wants to solve for f(x)-k=0. So he can either plot f(x)-k, and look for where it crosses the x-axis (I dont remember if a function does that), or make two curves, f(x) and k, and find the x-coordinate of their intersection. Their intersection is where f(x)=k.

Another way would be to go into the solver (i dont remember where it is to be honest, hopefully you know...), which solves equations for you.

Yes, this worked. Thanks!

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I understand where you're coming from now. That's a nice skill. I'll have to try that out sometime. :)tmc said:

Basically, he wants to solve for f(x)-k=0. So he can either plot f(x)-k, and look for where it crosses the x-axis (I dont remember if a function does that), or make two curves, f(x) and k, and find the x-coordinate of their intersection. Their intersection is where f(x)=k.

Another way would be to go into the solver (i dont remember where it is to be honest, hopefully you know...), which solves equations for you.

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