
 (You can compile the *.c files directly without create a project)

          f.h : The function and the derivative.

 f___A.h   : ***** SAVE THIS FILE AS "f.h" TO WORK WITH THE A FILES *****
 cb03A1.c  : Draw    the normal.
 cb03A2.c  : Animate the normal.
 cb03A3.c  : Find the intersection points of the normal with the x-y axis.
 cb03A4.c  : Find PA, the length of the normal from P to the x axis.
 cb03A5.c  : Find PB, the length of the normal from P to the y axis.
 cb03A6.c  : Find AM, the length of the under normal.

 f___B.h   : ***** SAVE THIS FILE AS "f.h" TO WORK WITH THE B FILES *****
 cb03B1.c  : Draw    the normal.
 cb03B2.c  : Animate the normal.
 cb03B3.c  : Find the intersection points of the normal with the x-y axis.
 cb03B4.c  : Find PA, the length of the normal from P to the x axis.
 cb03B5.c  : Find PB, the length of the normal from P to the y axis.
 cba03B6.c  : Find AM, the length of the under normal.

 f___C.h   : ***** SAVE THIS FILE AS "f.h" TO WORK WITH THE C FILES *****
 cb03C1.c  : Draw    the normal.
 cb03C2.c  : Animate the normal.
 cb03C3.c  : Find the intersection points of the normal with the x-y axis.
 cb03C4.c  : Find PA, the length of the normal from P to the x axis.
 cb03C5.c  : Find PB, the length of the normal from P to the y axis.

 f___D.h   : ***** SAVE THIS FILE AS "f.h" TO WORK WITH THE D FILES *****
 cb03D1.c  : Draw    the normal.
 cb03D2.c  : Animate the normal.
 cb03D3.c  : Find the intersection points of the normal with the x-y axis.
 cb03D4.c  : Find PA, the length of the normal from P to the x axis.
 cb03D5.c  : Find PB, the length of the normal from P to the y axis.
 cb03D6.c  : Find AM, the length of the under normal.   
 