beginner's IF construction problem

Fri, 10 Aug 2012 20:21:10 -0700

Hello

this is what I'm trying to do:

1. A particle moves in a straight line for 40 s. T he velocity as a function of time is: (example)

t<10
v = 2*t

10<=t<=25
v = 1.5*t

25<t<=35
v = 2*t - 20

35<t<=40
v = 10

Create an M‐file that calculates the velocity as function of time and plots the velocity with time. Use if construct.

It's just a question from a textbook for beginners.
What I'm trying to do so far is to declare t = 0:0.1:40 before running the IF, which is not working because whenever I write if t<10 v = 1.4.*t I'm telling the program that when that condition is complied it should multiply 1.4 to the whole "array" t.

I appreciate any help,

Thanks

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beginner's IF construction problem