Trapezium Rule
f(x) =
from x =
to x =
Number of intervals =
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Total area =
Summary
The Trapezium Rule approximates the area under the curve by the formula:
[y
0
+ 2(y
1
+ y
2
+ ... + y
n-1
) + y
n
]×h/2
where n = number of intervals
a = first ordinate
b = last ordinate
h = interval width = (b - a)/n
y
i
= f(a + i×h)
You can define functions using these operators:
+
-
*
/
^
abs( )
sqrt( )
ln( )
exp( )
pi
sin( )
cos( )
tan( )
asin( )
acos( )
atan( )