Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Wirte a matlab code to plot the 3D image of a helix:
Use the following parameters and equations that define the axes in 3D:
p=0.199; Pitch distance (distance between the turns)
a=0.02999500; Radius of the helis wire
b=0.191; Radius of the helix
n = 5, is the number of helis turns.
δ = atan(p/(2*pi*b)); The pitch angle
x’ = b + a cos(Ө)
y’ = -a sin(Ө) sin(δ)
x = x’ sin(ф)+y’ cos(ф);
y =-x’ cos(ф)+y’ sin(ф);
z = p*ф/(2*pi)+a*sin(Ө)*cos(δ);
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