Wrong calculation

Elias Y. Daoud shared this problem 8 months ago
Not a Problem

Dear,

The y(x) shall be zero, why it is not so?

since if I draw the first part it is a straight line and the second parable, why the result is a line?

eq1: y x=Y0+tan(θ°) (x-x0)-g ((x-x0)^(2))/((1)/(2) V0^(2) cos^(2)(θ°))

Comments (5)

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1

Should it be


y =

rather than

y x=

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1

Actually I wrote it as y(x)=.... and the apps turn it automatically y x= ...

and why I should write it as y= ? maybe I have x or t or n as variables, how the function can know !!

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2

The syntax is f(t)= t^2 but x/y/z are special so these will result in a multiply: x(x), y(x), z(x)

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1

I am out of touch with Geogebra but from what I remember you use 'y =' for a conic section and 'f = ' or 'f(x) = ' for a function. If you use 'y(x) =' Geogebra treats it as a product 'y * x' as Michael B has pointed out. In your case it then plots a hyperbola.

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1

Understood, thanks

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