Question

MATlab

I'm trying to create the b matrix with the x and y points. The h's are delta x's. I keep getting the error matrix dimension must agree how do i fix this? I would like to not use a loop.

x = [0.9 1.3 1.9 2.1 2.6 3.0 3.9 4.4 4.7];
a = [1.3 1.5 1.85 2.1 2.6 2.7 2.4 2.15 2.05];
h = x(2:end) - x(1:end-1);
b = (3./h(2:end).*a(3:end)-a(2:end-1))-(3./h(1:end).*a(2:end)-a(1:end-1))

— ао) -(аз — а) — — (а ho b = 3 — а,-2) 3 - (а,-1 hn-2 -(а, — а,-1) - 0

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Answer 1

Your program is ok, but made one small mistake in last commands, as 'a' is running from

. also please take care of the braces in last command, otherwise answer will be wrong even for same matrix dimensions.

az to a End-1

I have given the correction in bold letters, please check the below commands,

code:

clc; clear all
x = [0.9 1.3 1.9 2.1 2.6 3.0 3.9 4.4 4.7];
a = [1.3 1.5 1.85 2.1 2.6 2.7 2.4 2.15 2.05];
h = x(2:end) - x(1:end-1);
b = ((3./h(2:end)).*(a(3:end)-a(2:end-1)))-((3./h(1:end-1)).*(a(2:end-1)-a(1:end-2)))

Output:

EDIT BREAKPOINTS RUN FILE NAVIGATE da C: Users Kiran I Desktop Command Window New to MATLAB? See resources for Getting Started. b = 0.2500 2.0000 -0.7500 -2.2500 -1.7500 -0.5000 0.5000 fx >> |