Hi I got a problem
Let a and b be two vectors...
(a x b) = |a| |b| sin(t) n
where t is the angle between the two vectors a and b ,and n is the unit vector in the direction as per right hand rule.
If I square the equation
(a x b)^2 = |a|^2 |b|^2 (sin(t))^2 n^2
(a x b)^2 = |a|^2 |b|^2 (sin(t))^2
Now if I take the square root of both the sides
(a x b) = |a| |b| sin(t) ...which is the problem LHS is vector and RHS is scaler
I think there is some rules for vectors which I didn't follow may be... but what please explain and give me some reference where I can read more about this.
Well I solved this in two ways ,one of them is wrong or what I dont know
First answer is
Which is correct as many book have them
But if I try to put 1 = tan(pi/4) and then try to solve it I get something else
I am not able to understand it ,can anybody explain me where I am wrong.....
Well I did it like this
By equation of the sphere its already given that the sphere is at origin (0,0,0).
Now from there we get radius of the sphere is
When I solve the equationas my answer is
And when I solve the equationas my answer is or .
Now which one is correct ,are both correct?
Now putting the different values for "n" we can get the value for theta and put it in the equation and check,but I did just a couple and I know if I can graph it it will show but which application to use for this kind of job I dont know.
Yes stefy I agree with you, but still we use approx symbol for that... don't we ?,in the book they directly used equal symbol.
Bob the topic was about... calculating vectors...
Their are two force vectors given,first one 70N north and another is 50N south west,so calculate the resulting force and direction.
I tried but I can't solve it...
If a,b are two different values of x lying between 0 and 2 pi (i.e.. 0 to 360 degrees) which satisfy the equation 6 cos x + 8 sin x = 9 ,find the value of sin(a + b).
Well what I did was I turned that equation into an quadratic equation and find the roots and also use the relation of the sum of the roots.But no luck my solution is getting no where....
here is what I got when I turned it into an quadratic...
I will purchase a laptop (Dell Inspiron 14R) with it installed.The over all cost seems ok.
Nvidia GeForce GT 730 M is designed for laptops/notebooks,for desktop their are other series both from AMD and Nvidia like Nvidia GTX series is best on desktop platform ,for future I am planning to buy a graphic card from GTX series for my desktop.
Well after more search I found Nvidia 730M doesn't support four non gaming DirectX 11.1 features ,two of them are for 2D which I don't need in my 3D programming and other two seems to be not very useful for my 3D work.The plus point of nvidia is I get features like Optimus, PhysX, CUDA, 3D Vision, FXAA, TXAA, OpenCL, Direct Compute,and much more which could be explored in 3D programming...
So I am going for Nvidia ,I am not concluding AMD is bad but at this very moment the over all advantages is given by Nvidia
Thanks bobbym and Agnishom
Thanks for the reply.
I think NVIDIA GeForce GT 730M score 2 points as its a bit better than AMD Radoen HD 8730M in performance and also it have drivers for linux which are better than ADM's drivers.
But I see AMD Radoen HD 8730M support full DirectX 11.1 in case of NVIDIA GeForce GT 730M it only support some features of DirectX 11.1,that's what making me thinking ,as for 3D development its better to have full DirectX 11.1,but again NVIDIA GeForce GT 730M have PhysX which is an another area I would like to explorer...
Any suggestions ....
I am going to buy a laptop ,is Dell Inspiron any good ...
Two models are quite good for my needs Dell Inspiron 14R and Dell Inspiron 15R
what you guys think about it?
The two models differ in screen size and graphic cards ,the screen size doesn't matters much for me but the graphic card does,so I have two choices
1) NVIDIA GeForce GT730M 2GB VRAM
2) AMD Radoen HD 8730M 2GB VRAM
Both cards are almost similar,so I am confused what should I do...