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visits member for 2 years, 8 months
seen Apr 27 '12 at 10:29

Feb
1
awarded  Notable Question
Nov
19
awarded  Famous Question
Mar
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Dec
31
awarded  Popular Question
Apr
27
accepted Calculate whether two objects collide given their movement equations
Apr
27
asked Calculate whether two objects collide given their movement equations
Apr
27
comment Calculate the vector normal to the plane by given points
Thanks, i understood
Apr
27
accepted Calculate the vector normal to the plane by given points
Apr
27
comment Calculate the vector normal to the plane by given points
sorry i am confused , since my example axb have only i j k , and the example in the link has i j k i j , is it different when there is an arrow on a , b ?
Apr
27
awarded  Student
Apr
27
comment Calculate the vector normal to the plane by given points
thanks, would you mind breifly tell how to get a x b?
Apr
27
asked Calculate the vector normal to the plane by given points
Apr
21
comment A 4x4 homogeneous matrix for a 90 degree rotation about Y axis?
Thanks for your help
Apr
21
awarded  Scholar
Apr
21
accepted A 4x4 homogeneous matrix for a 90 degree rotation about Y axis?
Apr
21
revised A 4x4 homogeneous matrix for a 90 degree rotation about Y axis?
added 134 characters in body
Apr
21
comment A 4x4 homogeneous matrix for a 90 degree rotation about Y axis?
Is my try correct ? Thank you...........
Apr
21
awarded  Editor
Apr
21
comment A 4x4 homogeneous matrix for a 90 degree rotation about Y axis?
Thanks , it helps, how about y and z?