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VCE Stuff => VCE Mathematics => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Specialist Mathematics => Topic started by: fredrick on August 06, 2008, 06:01:46 pm

Title: vector functions
Post by: fredrick on August 06, 2008, 06:01:46 pm: The path of a particle defined as a function of time t is given by the vector equation $r(t)=(1+t)i+(3t+2)j$ , $t\geq 0$
find the distace the particle is from the origin when t=3?
Title: Re: vector functions
Post by: phagist_ on August 06, 2008, 06:10:58 pm: $|r(3)|$

that help?
Title: Re: vector functions
Post by: fredrick on August 06, 2008, 06:19:35 pm: yeh but the answers is root 53?
Title: Re: vector functions
Post by: Mao on August 06, 2008, 06:33:45 pm: Quote from: fredrick on August 06, 2008, 06:19:35 pm
yeh but the answers is root 53?

i don't see how... it's probably wrong.