142
3. Input the polar coordinate expression (
r =).
!4(Sketch)1(Cls)w
5(GRPH)2(r =)
csdv
4. Press w to draw the graph.
w
• You can draw graphs of the following built-in scientific functions.
• sin
"
• cos
"
• tan
"
• sin
–1
"
• cos
–1
"
• tan
–1
"
• sinh
"
• cosh
"
• tanh
"
• sinh
–1
"
• cosh
–1
"
• tanh
–1
"
•
"
•
"
2
• log
"
• ln
"
• 10
"
• e
"
•
"
–1
•
3
"
• View Window settings are made automatically for built-in graphs.
uu
uu
uTo graph parametric functions
You can graph parametric functions that can be expressed in the following format.
(X, Y) = ( f (T), g(T))
Example To graph the following parametric functions:
x = 7 cos T – 2 cos 3.5T
y = 7 sin T – 2 sin 3.5T
Use the following View Window parameters.
Xmin = –20 Ymin = –12
Xmax = 20 Ymax = 12
Xscale = 5 Yscale = 5
T,
"
min = 0 T,
"
max = 4#
T,
"
pitch = #÷36
8 - 5 Drawing Graphs Manually
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