Project
Explanations of Graphing menus
Which one would you like to define?
- Custom function: Defines a function using the Snap*!* Expression and saves the input converted to blocks into the ‘Custom Function Definitions’ list.
- Graph function: Plots a parametric graph using the ‘Custom Function Definitions’ list that you’ve defined.
- ‘Enter item number to plot. (x(t)-position)’: Enter the item number existing in the ‘Custom Function Definitions’ list to set the definition of x(t).
- ‘Enter item number to plot. (y(t)-position)’: Enter the item number existing in the ‘Custom Function Definitions’ list to set the definition of y(t).
- ‘Enter the Snap! Expression syntax to set the starting point of t-value.’: Enter the Snap! Expression syntax to set the starting point of t-value.
- ‘Enter the Snap! Expression syntax to set the ending point of t-value.’: Enter the Snap! Expression syntax to set the ending point of t-value.
- ‘Enter the interval count.’: Enter the interval count to draw the graph.
Tips for writing the Snap! Expression Syntax
Replace the [parameters] into the actual parameter names.
- To write 1+2:
(+ 1 2 [parameters]) - To write 10-2:
(- 10 2 [parameters]) - To write 5\times2:
(* 5 2 [parameters]) - To write 6\div3:
(/ 6 3 [parameters]) - To write 8^2:
(^ 8 2 [parameters]) - Get variables
- To get the variable named
definitions:(get definitions [parameters]) - To get the variable named
function items:(get "function items" [parameters])
- To get the variable named
- To write -x(Negation of x):
(fn [neg] (get x) [parameters]) - To write \sqrt{x}(Square root of x):
(fn [sqrt] (get x) [parameters]) - To write \pi:
(pi) - To write \sin x:
(fn [sin] (get x) [parameters])(Any trigonometric functions (\sin, \cos, \tan) are supported) - To write \sin^{-1} x:
(fn [asin] (get x) [parameters])(Any trigonometric functions (\sin^{-1}, \cos^{-1}, \tan^{-1}) are supported) - To write e^x:
(fn [e^] (get x) [parameters]) - To write |x|:
(fn [abs] (get x) [parameters]) - Get specific item in specific list
- To get the first item of list
definitions:(item 1 (get definitions) [parameters]) - To get the last item of list
function items:(item [last] (get "function items") [parameters])
- To get the first item of list
- Calling functions
- To write f(x):
(call (get f) : (items (get x)) [parameters]) - To write g(x,y):
(call (get g) : (items (get x) (get y)) [parameters])
- To write f(x):
Examples
Adding soon!
Final description
If the info is not enough or has the typo, Explain it to me, I will enhance it.