Question and Answers Forum

All Questions Topic List

VectorQuestion and Answers: Page 9

Question Number 81007 Answers: 0 Comments: 1

if t_m +t_n and t_m −t_n is triangular number find the value of m+n

$i f t_{m} + t_{n} a n d t_{m} - t_{n} i s t r i a n g u l a r$ $n u m b e r f i n d t h e v a l u e o f m + n$

Question Number 80642 Answers: 0 Comments: 0

Question Number 80237 Answers: 1 Comments: 5

Question Number 80119 Answers: 2 Comments: 0

Question Number 79731 Answers: 1 Comments: 5

Question Number 79515 Answers: 0 Comments: 0

Question Number 79308 Answers: 1 Comments: 3

Question Number 79131 Answers: 1 Comments: 2

Determine the set of points M such as ∣∣MA^→ +MB^→ +2MC^→ ∣∣=6(√3) AB=BC=AC=6 ABC is triangle.

$Determine the set of points M$ $such as ∣∣ M \vec{A} + M \vec{B} + 2 M \vec{C} ∣∣= 6 \sqrt{3}$ $AB = BC = AC = 6$ $ABC is triangle .$

Question Number 79121 Answers: 1 Comments: 0

Question Number 78458 Answers: 0 Comments: 2

if I_n =∫_0 ^(π/4) tan^n xdx and I_n =a_n +b_n I_(n−2) then find a_(10)

$i f I_{n} = \int_{0}^{\frac{π}{4}} {t a n}^{n} x d x a n d I_{n} = a_{n} + b_{n} I_{n - 2} t h e n f i n d a_{10}$

Question Number 78391 Answers: 0 Comments: 0

Question Number 78316 Answers: 0 Comments: 2

the circle represents a farm where (LK) is symetric axe of circle such as ∀ M of this circle verifying ML^2 −4MK^2 =0 with LK=150m. calculate the radius of circle. please help me...

$the circle represents a farm where$ $(LK) is symetric axe of circle such$ $as \forall M of this circle verifying$ ${ML}^{2} - {4 MK}^{2} = 0 with LK = 150 m .$ $calculate the radius of circle .$ $please help me . . .$

Question Number 78060 Answers: 2 Comments: 1

Question Number 77745 Answers: 0 Comments: 1

ABC is any triangle. C′ . B′ .A′ are respectively middles of [AB] . [AC] and [BC]. we suppose that AB=c AC=b BC=a. 1) u^(→ ) =a^2 BC^→ +b^(2 ) C^→ A+c^2 AB^→ is a vector Demonstrate that u^→ =(a^2 −b^2 )AC^→ +(c^2 −a^2 )AB^→ . i have done it. 2)Deduct that u^→ is not a null vector.

$ABC is any triangle .$ $C^{'} . B^{'} . A^{'} are respectively middles$ $of [AB] . [AC] and [BC] .$ $we suppose that$ $AB = c AC = b BC = a .$ $1) \vec{u} = a^{2} B \vec{C} + b^{2} \vec{C A} + c^{2} A \vec{B} is a vector$ $Demonstrate that \vec{u} = (a^{2} - b^{2}) A \vec{C} + (c^{2} - a^{2}) A \vec{B} .$ $i h a v e d o n e i t .$ $2) D educt that \vec{u} is not a null vector .$

Question Number 77676 Answers: 0 Comments: 0

Please how can we demonstrate that a vector is null... hello

$Please how can we demonstrate$ $that a vector is null . . .$ $hello$

Question Number 77356 Answers: 1 Comments: 0

The plan is provided with an orthonormal reference ( O.I.J). the following points are given A(1,2) B(−2,3) C(1,9). We assume that the point O is the barycenter of the point A,B,C. →O=bar{(A;3),(B;1),(C;−1)} Question 1 knowing that 3MA^2 +MB^2 −MC^2 =3MO^2 +3OA^2 +OB^2 −OC^2 Determine and construct the set of points M on the plane such as 3MA^2 +MB^2 −MC^2 =−42

$The plan is provided with an$ $orthonormal reference (O . I . J) .$ $the following points are given$ $A (1, 2) B (- 2, 3) C (1, 9) .$ $We assume that the point O is the$ $barycenter of the point A, B, C .$ $\to O = bar {(A; 3), (B; 1), (C; - 1)}$ $Question 1$ $knowing that$ ${3 MA}^{2} + {MB}^{2} - {MC}^{2} = {3 MO}^{2} + {3 OA}^{2} + {OB}^{2} - {OC}^{2}$ $Determine and construct the set$ $of points M on the plane such as$ ${3 MA}^{2} + {MB}^{2} - {MC}^{2} = - 42$

Question Number 77296 Answers: 0 Comments: 4

Determiner et construire l.ensemble des points M tel que: 3MA^2 +MB^2 −MC^2 =−42 Le plan est muni d.un repere orthonorme (O,I,J) A(1,2) B(−2,3) C(1,9). on considere que O=barycentre{(A,3);(B;1);(C;−1)}

$Determiner et construire l . ensemble$ $des points M tel que :$ ${3 MA}^{2} + {MB}^{2} - {MC}^{2} = - 42$ $Le plan est muni d . un repere$ $orthonorme (O, I, J)$ $A (1, 2) B (- 2, 3) C (1, 9) .$ $on considere que$ $O = barycentre {(A, 3); (B; 1); (C; - 1)}$