In need of decreasing exponential smooth curve

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u=0.3; pi=22/7; g=80;
l=20; d=10; p=1;
r=linspace(0,1,10);
m=tand(p)
a=(r-m*(d+l)).^-2-((r-m*l).^-2)
q=(pi*r.^4*g)/(8*u*l)
t=(2*u*q.*a)/(pi*m)
plot(r,t)
I need a decreasing smooth exponential curve. please help me

Accepted Answer

Stephan
Stephan on 10 Feb 2019
Edited: Stephan on 10 Feb 2019
Your linspace call will lead to 10 results calculated in the interval of 0...1. If you leave the 10 away, the standard is 100 values, which gives a smoother curve:
u=0.3; g=80;
l=20; d=10; p=1;
r=linspace(0,1);
m=tan(p);
a=(r-m*(d+l)).^-2-((r-m*l).^-2);
q=(pi*r.^4*g)/(8*u*l);
t=(2*u*q.*a)/(pi*m);
plot(r,t)
You should also do not overwrite pi - it is a constant in Matlab - no need to define it.
Best regards
Stephan
  3 Comments
Stephan
Stephan on 10 Feb 2019
Edited: Stephan on 10 Feb 2019
what about
m=exp(p)
for the interval 0...1 it is a smooth decreasing curve. That is the desired result?

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