2
ans
0
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Question 226771
1
ans
0
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โซ((ln(x^2 +3x+2))/(x^2 +1))dx[
0
ans
1
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The vectors OP, OQ and OR represented
by a,b and c respectively: where a=10i+j,
b=โ2i+7j, c=a+3b, and O is the origin.
OR and PR intersects at M where
OM=kOR and PM=lPQ and k, l are
constants. Find:
(i) The equation of the lines of PQ and
OR
(ii) The coordinayes of the point M
(iii)The values of the constants k and l
0
ans
3
cmts
Question 224224
1
ans
0
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โซ_0 ^( โ) ((tanh^2 (x))/x^2 ) dx
0
ans
0
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Question 221088
2
ans
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prove
ฮ _(n=2) ^โ e(1โ(1/n^2 ))^n^2 = (ฯ/(e(โe)))
1
ans
1
cmts
โซ(dx/(1 + sin^3 x + cos^3 x))
0
ans
0
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E^ lectric field strenth at any point in the space
is defined as the force per unit charge at that point.
It is a vector quantity whose magnitude is
given by Coulomb^(s ) law and diection is in
straight line loining the at that point.
mathemstically
5
ans
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Question 219185
1
ans
0
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((6C3ร4C1)/(15C4))
0
ans
0
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โซ_0 ^(ฯ/2) (dx/((acos^2 x+bsin^2 x)^n ))
1
ans
0
cmts
Question 215418
2
ans
3
cmts
Determine the unit Vector perpendicular in plane of A = 2i-6j-3k , B = 4i+3j-k
4
ans
2
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Question 214793
0
ans
1
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Question 213817
0
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0
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Question 212131
1
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โโโโโโโโโโโโ
๐= ฮฃ_(n=0) ^โ ((1/(3n+2)) โ(1/(3n+1)) )= a๐
โ a^2 = ?
โโโโโโโโโโโโ
0
ans
0
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Question 210927
6
ans
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{ (( If, D : x^2 +y^( 2) + z^( 2) โค1)),(( โโซโซ_D^ โซ(( x^2 + 2y^( 2) )/(x^2 + 4y^2 +z^2 )) dxdydz=?)) :}
1
ans
0
cmts
Prove that:
if (xโ]โ(ฯ/2),(ฯ/2)[ y =โซ^( x) _( 0) (dt/(cos(t))) ) โ (yโIR x =โซ^( y) _( 0) (dt/(cosh(t))) )
1
ans
0
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Question 208931
0
ans
0
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Question 208395
0
ans
2
cmts
Find the value of the scalar for which the vector a = 3i + 2j is perpendicular to b = 4i - 3j
1
ans
0
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Question 207901
2
ans
0
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Question 206779
1
ans
0
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OA=(4^x ) OB=_7 ^5 and AB=5 units
1
ans
0
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(((โ3)),(1) ) and ((1),((โ3)) ) vector find ฮธ=?
1
ans
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a^โ =i^ +3j^ +4k^ b^โ =2i^ โ3j^ +4k^ c^โ =5i^ โ2j^ +4k^ given that p^โ รb^โ =b^โ รc^โ and p^โ .b^โ =0 then the value of p^โ (i^ โj^ +k^ )is
1
ans
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cmts
Find the determinant:
determinant (((1โx),2,3,โฆ,n),(1,(2โx),3,โฆ,n),(1,2,(3โx),โฆ,n),(โฎ,โฎ,โฎ,โฑ,โฎ),(1,2,3,โฆ,(nโx)))
1
ans
0
cmts
Find the determinant:
determinant ((5,3,0,0,โฆ,0,0),(2,5,3,0,โฆ,0,0),(0,2,5,3,โฆ,0,0),(โฎ,โฎ,โฎ,โฎ,โฑ,โฎ,โฎ),(0,0,0,0,โฆ,5,3),(0,0,0,0,โฆ,2,5))
0
ans
0
cmts
Question 204509
0
ans
4
cmts
Question 203419
0
ans
0
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Question 202035
1
ans
0
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Question 201526
1
ans
0
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Question 201135
0
ans
6
cmts
two weels, those have the same materials,
with radii:r_1 =4 and r_2 =14
are starting to move on a surface,with
the same velocity,from:x=0 to x=20.
the surface has no friction.
wich one arrives faster?
any informations needed?
0
ans
0
cmts
Question 200787
0
ans
0
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Question 200786
0
ans
0
cmts
in a triangle
nmmm5gfkl
1
ans
0
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Calcul I=โซ^( (ฯ/2)) _( 0) ((ln(cost))/(1+sin^2 t))dt
1
ans
0
cmts
Calculer โซ^( +โ) _( (1/ฮฑ)) e^(โฮฑt^2 +2t) dt
0
ans
3
cmts
Question 195722
0
ans
1
cmts
If r_1 ^(โ) =(sinฮธ,cosฮธ,ฮธ), r_2 ^(โ) =(cosฮธ,โsinฮธ,โ3) and
r_3 ^(โ) =(2,3,โ1), find (d/dฮธ){r_1 ^(โ) ร(r_2 ^(โ) รr_3 ^(โ) )} at ฮธ=0
1
ans
0
cmts
A ball is thrown vertically upwards with a velocity of 10m/s from a point 75 m above the ground. Calculate the velocity with which it hits the ground.
1
ans
0
cmts
An object is pulled up a smooth plane inclined at angle 45ยฐ to the horizontal. If the plane is 25 m long and the object comes to rest at the top, correct to two decimal places the:
(i) initial speed of the object
(ii) time taken to reach the top.
0
ans
0
cmts
A(-1, 2), B(3, 5) and C(4, 8) are the vertices of triangle ABC. Forces whose magnitudes are 5N and 3โ10N act along (AB) โ and (CB) โ respectively. Find the direction of the resultant of the forces.
0
ans
0
cmts
Calcule: I=โซ_o ^(๐/3) x^2 (sinx)^2 dx
0
ans
0
cmts
calculate
laplace transform
L { (( e^( โ(1/x)) )/( (โx) )) } = ?
0
ans
1
cmts
determinant ((( If , ฮฉ= โซ_0 ^( (ฯ/2)) (( 4cos^( 2) (4x))/(3(1+sin^( 2) (2x ))))dx= a(โ2) + b )))
โ Find the value of , aโ b=?
