Matrices and Determinants – Page 22

5-3-3-2-A-2-5-5-1-4-7-6-2-Find-4A-1-

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Question Number 22432 by Joel577 last updated on 18/Oct/17 $(\begin{matrix} 5 3 \\ 3 2 \end{matrix}) A + (\begin{matrix} 2 5 \\ 5 1 \end{matrix}) = (\begin{matrix} 4 7 \\ 6 2 \end{matrix})$ $Find ∣ 4 A^{- 1} ∣$ Terms of Service Privacy Policy Contact: info@tinkutara.com

Question-153486

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Question Number 153486 by roxceefocus last updated on 07/Sep/21 Answered by liberty last updated on 08/Sep/21 $d e t (F) = 3 (0) - 4 (0 - 4) + 2 (0 + 2)$ $= 16 + 4 = 20$ $(\begin{matrix} x \\ y \\ z \end{matrix}) = \frac{1}{20} a d j (\begin{matrix} 3 4 2 \\ 0 - 1 2 \\ 2 1 - 2 \end{matrix}) (\begin{matrix} - 1 \\ - 8 \\ 6 \end{matrix})$ Terms of…

equivalent-matrices-are-obtained-by-

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Question Number 22386 by gopikrishnan005@gmail.com last updated on 17/Oct/17 $e q u i v a l e n t m a t r i c e s a r e o b t a i n e d b y$ Terms of Service Privacy Policy Contact: info@tinkutara.com

Question-87843

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Question Number 87843 by ar247 last updated on 06/Apr/20 Commented by ar247 last updated on 06/Apr/20 $p l e a s e h e l p m e w i t h e x p l e n a t i o n$ Commented by jagoll last updated on…

Question-87831

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Question Number 87831 by aseer imad last updated on 06/Apr/20 Commented by aseer imad last updated on 06/Apr/20 please solve the problem by row echilon form or reduced row echilon form. TIA Answered by arcana last updated on…

let-D-v-5-1-3-m-find-number-v-and-m-such-that-D-2-5I-I-identity-matrix-

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Question Number 153227 by Eric002 last updated on 05/Sep/21 $l e t D = [\begin{matrix} v 5 \\ \frac{1}{3} m \end{matrix}] f i n d n u m b e r (v) a n d$ $(m) s u c h t h a t D^{2} = 5 I (I = i d e n t i t y m a t r i x)$ Answered by puissant last updated on 05/Sep/21 $${D}^{\mathrm{2}} =\begin{bmatrix}{{v}^{\mathrm{2}} +\frac{\mathrm{5}}{\mathrm{3}}\:\:\:\:\:\:\:\:\:\:\mathrm{5}{v}+\mathrm{5}{m}}\{\frac{{v}}{\mathrm{3}}+\frac{{m}}{\mathrm{3}}\:\:\:\:\:\:\:\:\:\:\frac{\mathrm{5}}{\mathrm{3}}+{m}^{\mathrm{2}}…

Question-152545

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Question Number 152545 by liberty last updated on 29/Aug/21 Answered by Olaf_Thorendsen last updated on 31/Aug/21 $\cos \frac{π}{12} = \cos (\frac{π}{4} - \frac{π}{6})$ $\cos \frac{π}{12} = \cos \frac{π}{4} \cos \frac{π}{6} + \sin \frac{π}{4} \sin \frac{π}{6}$ $\cos \frac{π}{12} = \frac{1}{\sqrt{2}} . \frac{\sqrt{3}}{2} + \frac{1}{\sqrt{2}} . \frac{1}{2}$ $$\mathrm{cos}\frac{\pi}{\mathrm{12}}\:=\:\frac{\mathrm{1}+\sqrt{\mathrm{3}}}{\mathrm{2}\sqrt{\mathrm{2}}}\:\:\:\:\left(\mathrm{1}\right)…

E-is-a-vectorial-plan-in-R-with-a-base-B-i-j-f-is-an-endomorphism-of-E-defined-u-xi-yj-by-f-u-7x-12y-i-4x-7y-j-1-Determinate-f-i-and-f-j-then-write-the-mat

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Question Number 86021 by mathocean1 last updated on 26/Mar/20 $E i s a v e c t o r i a l p l a n i n R w i t h a b a s e$ $B = (\vec{i}, \vec{j}) . f i s a n e n d o m o r p h i s m o f E$ $d e f i n e d \forall \vec{u} = x \vec{i} + y \vec{j} b y f (\vec{u}) = (- 7 x - 12 y) \vec{i} + (4 x + 7 y) \vec{j} .$ $$\left.\mathrm{1}\right)\:{Determinate}\:{f}\left(\overset{\rightarrow} {{i}}\right)\:{and}\:{f}\left(\overset{\rightarrow}…

Question-151028

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Question Number 151028 by kalenis last updated on 17/Aug/21 Answered by amin96 last updated on 17/Aug/21 ${\begin{cases} x + y - z = 7 - \\ x - y + 2 z = 3 \\ 2 x + y + z = 9 \end{cases} \Rightarrow {\begin{cases} 2 x + z = 10 \\ 10 + y = 9 \end{cases} \Rightarrow {\begin{cases} 2 x + z = 10 \\ y = - 1 \end{cases}$ ${\begin{cases} x - z = 8 \\ x + 2 z = 2 \end{cases} {\begin{cases} 2 x - 2 z = 16 \\ x + 2 z = 2 \end{cases} \Rightarrow 3 x = 18 x = 6$ $x - z = 8 \Rightarrow z = - 2 a n s w e r (6; - 1; - 2)$ Terms of…

Let-A-and-B-is-3-3-matrix-of-equal-number-where-A-symmetric-matrix-B-skew-symmetric-matrix-and-the-relation-A-B-A-B-A-B-A-B-then-the-value-of-k-AB-T-1-k-AB-a-1-

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Question Number 19589 by gourav~ last updated on 13/Aug/17 $L e t A a n d B i s 3 \times 3 m a t r i x o f e q u a l n u m b e r$ $w h e r e A = s y m m e t r i c m a t r i x$ $\dots . B = s k e w s y m m e t r i c m a t r i x$ $a n d t h e r e l a t i o n \dots (A + B) (A - B) = (A - B) (A + B)$ $t h e n . . t h e v a l u e o f . . \dots k$ ${(A B)}^{T} = {(- 1)}^{k} (A B)$ $$\left({a}\right)\:−\mathrm{1}\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\left({c}\right)\:\mathrm{2} \…

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