IGCSE/GCSE/O & A Level/IB/University Student Forum

Qualification => Subject Doubts => GCE AS & A2 Level => Math => Topic started by: Mohammad Aamer on March 04, 2010, 10:59:19 pm

Title: Dot product problem (vectors)
Post by: Mohammad Aamer on March 04, 2010, 10:59:19 pm

what will be the dot product of :
(i+3j-k)(5i+2j-pk)........p is a variable.
Kindly give me a pointer or two.

Title: Re: Dot product problem (vectors)
Post by: solo_G on March 05, 2010, 01:21:46 am

(i+3j-k)(5i+2j-pk)

man all i could think of is 11+p thats it!!! ??? maybe u shud read da Qs well cuz dat cant be it there must be smthn dat u r missing!

Title: Re: Dot product problem (vectors)
Post by: astarmathsandphysics on March 05, 2010, 01:24:43 am

It is 11+p