Mathematics: Post your doubts here!

[Dubi Pro]

answer*

 

[***amd***]

in this quest, the lAl is 32

but the problem is the matrix is in fraction. when im multiplying im getting a wrong asnswer. but when i invert the 1/32 to 32/1 and multiply the naswer is correct.

any idea why?

u have to *divide* the Adjoint by 1/32, not to 'multiply it!
and lAl = 1/32, not 32.

 

[Dubi Pro]

OK then? still after i divide the adjoint, im getting the wrong answer! and when should u divide the adjoint? only when the Matrix is in fraction?

 

[***amd***]

OK then? still after i divide the adjoint, im getting the wrong answer! and when should u divide the adjoint? only when the Matrix is in fraction?

WHATSOEVER is the matrix type, u will always DIVIDE THE ADJ WITH DETERMINANT TO FIND THE INVERSE.

gimme the link...

 

[***amd***]

OK then? still after i divide the adjoint, im getting the wrong answer! and when should u divide the adjoint? only when the Matrix is in fraction?

listen, 1/(1/32) = 32
so 1/(1/32) * that adj.matrix = 32 * adj.matrix
got it?

 

[Awesome12]

listen, 1/(1/32) = 32
so 1/(1/32) * that adj.matrix = 32 * adj.matrix
got it?

hey give me some tips to ace O Level maths p2

 

[***amd***]

hey give me some tips to ace O Level maths p2

learn all the formulas and try applying them in thingsaround you. ur table, ur bed everything

 

[Awesome12]

learn all the formulas and try applying them in thingsaround you. ur table, ur bed everything

Too bad there ain't a :facepalm: emoticon around here

 

[***amd***]

Too bad there ain't a :facepalm: emoticon around here

simply, when u do maths. dont think of ANYTHING else

 

[Dubi Pro]

listen, 1/(1/32) = 32
so 1/(1/32) * that adj.matrix = 32 * adj.matrix
got it?

will try doing it 0_0

 

[Dubi Pro]

how on this earth can this be done btw?

 

[***amd***]

how on this earth can this be done btw?

ARE U SERIOUS? i mean this is just simple simplification.

 

[Dubi Pro]

ARE U SERIOUS? i mean this is just simple simplification.

what simplification? -.- value u gotta find...

 

[Dubi Pro]

fine solve and let me knw?

 

[***amd***]

what simplification? -.- value u gotta find...

solve for 3 + 4/(5+6) then put its value in the expression given and simlify it.

 

[princess sofia]

file:///C:/Users/AhsanSheraz/Downloads/p4November%202000.pdf
Q1 (a)(ii)
its of 1 mark so wt shortcut r we gonna use

 

[***amd***]

file:///C:/Users/AhsanSheraz/Downloads/p4November%202000.pdf
Q1 (a)(ii)
its of 1 mark so wt shortcut r we gonna use

link plz

 

[princess sofia]

link plz

sorry i guess it wasnt pasted properly

 

[***amd***]

sorry i guess it wasnt pasted properly

let the total amount be A
(150/360) * A = 75000
A = 75000 * (360/150)

amount for material = (84/360) * A
thats it.
no matter how long ur solution goes. u just have to answer it

 

[***amd***]

how can i find the coordinates of a point by drawing a tangent. the gradient is 3 ?
past paper: 2012 paper 43 question 7(e)

link plz?