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fa.h
/* ---------------------------------- */ /* save as fa.h */ /* ---------------------------------- */ double f( double x, double y) { return( ( 1./5. * sqrt(225-25*x*x-9*y*y) ) ); } /* ---------------------------------- */ char feq[] = "1./5. * sqrt(225-25*x**2-9*y**2)"; /* ---------------------------------- */
fb.h
/* ---------------------------------- */ /* save as fb.h */ /* ---------------------------------- */ double f( double x, double y) { return( ( exp(-x*x*x-y*y) ) ); } /* ---------------------------------- */ char feq[] = "exp(-x**3-y**2)"; /* ---------------------------------- */
fc.h
/* ---------------------------------- */ /* save as fc.h */ /* ---------------------------------- */ double f( double x, double y) { return( sin(cos(x*y)) ); } /* ---------------------------------- */ char feq[] = "sin(cos(x*y))"; /* ---------------------------------- */
fd.h
/* ---------------------------------- */ /* save as fd.h */ /* ---------------------------------- */ double f( double x, double y) { return( (2*x+6*x*x*y) ); } /* ---------------------------------- */ char feq[] = "2*x+6*x**2*y"; /* ---------------------------------- */
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