How can i plot this function? y=0.75/(log10(x)*2).^2

조회 수: 1(최근 30일)
Hi, ive been trying differents ways of plotting fuctions such as log, implicit... but i cant manage to plot in 2D the next function in matlab
y= 0.75/(log10(x)*2).^2

채택된 답변

RAGHUNATHRAJU DASHARATHA
RAGHUNATHRAJU DASHARATHA 2022년 10월 31일
As per my understanding you want to plot the given function in 2D plot .
It is just that you forgot to add '.' before '/' to do element wise operation.I will explain it with the example below
x=2:10;
y= 0.75./(log10(x)*2).^2
y = 1×9
2.0691 0.8237 0.5173 0.3838 0.3097 0.2625 0.2299 0.2059 0.1875
plot(x,y)

추가 답변(3개)

Jon
Jon 2022년 10월 31일
Something like this?
x = linspace(1,10); % or whatever interval you would like change accordingly
y = 0.75 ./(log10(x).^2).^2 % note .^ for element wise power on log10(x)
y = 1×100
1.0e+05 * Inf 3.6781 0.2707 0.0623 0.0228 0.0107 0.0059 0.0036 0.0024 0.0017 0.0012 0.0009 0.0007 0.0006 0.0005 0.0004 0.0003 0.0003 0.0002 0.0002 0.0002 0.0002 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001
figure
plot(x,y)
% Or maybe you want the final power of 2 apply to the numerator and the
% denominator?
y = (0.75 ./(log10(x).^2)).^2
y = 1×100
1.0e+05 * Inf 2.7586 0.2030 0.0467 0.0171 0.0080 0.0044 0.0027 0.0018 0.0012 0.0009 0.0007 0.0005 0.0004 0.0003 0.0003 0.0002 0.0002 0.0002 0.0002 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001
plot(x,y)

Mike Croucher
Mike Croucher 2022년 10월 31일
How about this?
x = linspace(0.01,0.99,100); % Avoid tricky inputs like 1
y = 0.75./(log10(x)*2).^2;
plot(x,y)

Torsten
Torsten 2022년 10월 31일
What do you mean by "in 2D" ? It is a simple function to be plotted y vs. x:
x = 2:0.01:5;
y = 0.75./(log10(x)*2).^2;
plot(x,y)

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