Find the area with equtions
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It's my way to find area, but there's an error ' Undefined function or variable 'x'. what's your idea?
x0 = pi / 2 - 1 ;
x1 = 0.8317 ;
x2 = pi / 2 ;
y = int ((sqrt (1 - ( x - x2 )^2)) , x0 , x1);
z = int (cos(x), x1 , x2 );
A = z + y ;
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Walter Roberson
2017 年 12 月 9 日
You can use the symbolic toolbox to attempt a closed-form integration if you command
syms x
However, you are probably expected to use numeric integration, which uses integral() of a function handle, not int() with a formula.
Also, for numeric work you need to use .^ instead of ^
y = integral( @(x) (sqrt (1 - ( x - x2 ).^2)) , x0 , x1);
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