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@@ -11,7 +11,7 @@ In the generic framework, there are predefined expressions for constants of func |
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|Parentheses| () | (-x+1)*(x+2) | | |
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|Standard Operations| +,-,/,*,^ |1+2, pi/2| | |
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|Absolute value| abs(arg) or |arg| | abs(x), | | |
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-|Trigonometric functions| sin, cos, tan, asin, acos, atan, sinh, cosh, tanh, asinh, acosh, atanh| sin(2*pi), (cos(x))^2 |if z is a complex number, atan(z) is the phase of z. It is in the range (-pi, pi], you may use also arcsin, arccos, etc| |
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+|Trigonometric functions| sin, cos, tan, asin, acos, atan, sinh, cosh, tanh, asinh, acosh, atanh, atan2 | sin(2*pi), (cos(x))^2, atan2(-1,1)|if z is a complex number, atan(z) is the phase of z. It is in the range (-pi, pi], you may use also arcsin, arccos, etc<br /> <br /> atan2 takes two real arguments x and y separated by a semicolon: atan2(x;y)| |
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| Signum | sign(arg) | sign(x) = 1, x>0; sign(0)=0; sign(x)=-1,x<0| If the number field is complex or complex-rational, sign(arg) is only defined for im(arg)=0. | |
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|Theta/Heaviside | theta(arg) | theta(x) = 1,x>=0; theta(x)=0, x<0| If the number field is complex or complex-rational, theta(arg) is only defined for im(arg)=0. | |
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|Dirac delta function (1 for x = 0, 0 otherwise)| dirac(arg) | dirac(x)| If the number field is complex or complex-rational, dirac(arg) is only defined for im(arg)=0. | |
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