Navaneetha Krishnan Murugadoss

Last seen: 4 years ago | Active since 2022

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How do i write this code for different timestep like this code is for 3600 and i want to use different timesteps like 1800,900,450
nsteps = 12; t = zeros (nsteps,1); A = zeros (nsteps,1); B = zeros(nsteps, 1); P = zeros(nsteps,1); A(1) = 1; B(1) = 3; C...

4 years ago | 2 answers | 0

2

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Question

Invalid expression. When calling a function or indexing a variable, use parentheses. Otherwise, check for mismatched delimiters.
nma_laplaceRectNuemann2(nx=3; ny=3; bottom=0; top=170; right=50; lambda=1.2; tol=0.1; nma_laplaceRectNuemann2(nx,ny,bottom,top...

4 years ago | 1 answer | 0

1

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Question

Invalid expression. When calling a function or indexing a variable, use parentheses. Otherwise, check for mismatched delimiters.
for Y(1) =1:1:numel(t) ↑ Invalid expression. When calling a function or indexing a variable, use parentheses. Otherwise,...

4 years ago | 4 answers | 0

4

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Question

How to function 𝑎𝐴 + 𝑏𝐵 → 𝑝P in ODE89
𝑎𝐴 + 𝑏𝐵 → 𝑝P 𝑑𝐴/𝑑𝑡 = −𝐾 ∗ 𝐴 ∗ 𝐵 𝑑𝐵/𝑑𝑡 = (𝑏/𝑎) ∗ (𝑑𝐴/𝑑𝑡) = −𝑌𝐵 ∗ (𝐾 ∗ 𝐴 ∗ 𝐵) 𝑑𝑃/𝑑𝑡 = −(𝑝/𝑎) ∗ (𝑑𝐴/𝑑𝑡) = 𝑌𝑃 ∗ (𝐾 ∗ 𝐴 ∗ 𝐵)

4 years ago | 1 answer | 0

1

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Answered
Array indices must be positive integers or logical values.
clc clear all YB=1; YP=0.15; A0=1; B0=3; P0=0; K= 5E-5; ti=0; tf=12; F=@(t,y)[-K*y(1)*y(2);-YB*K*y(1)*y(2);YP*K*y(1)...

4 years ago | 0

Question

Array indices must be positive integers or logical values.
Error in TASKA (line 22) A(t)=(A0-B0/YB)./(1-(B0/(YB*A0))*exp(-((YB*A0/B0)-1)*K*B0.*t));

4 years ago | 2 answers | 0

2

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Question

Unrecognized function or variable 'ode89'.
Error in TASKA (line 18) [t,y]= ode89(f,[ti tf],[A0;B0;P0]);

4 years ago | 1 answer | 0

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