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CBSE Class 12-science Answered

If a =  i – 2j + 3k and b = i – 3k  then find I b X 2aI    i j and k and k are unit vector
Asked by haroonrashidgkp | 02 Nov, 2018, 09:28: PM
answered-by-expert Expert Answer
begin mathsize 16px style straight a with bar on top equals straight i with hat on top minus 2 straight j with hat on top plus 3 straight k with hat on top space and space straight b with bar on top equals straight i with hat on top minus 3 straight k with hat on top 2 straight a with bar on top equals 2 straight i with hat on top minus 4 straight j with hat on top plus 6 straight k with hat on top straight b with bar on top cross times 2 straight a with bar on top equals open vertical bar table row cell straight i with hat on top end cell cell straight j with hat on top end cell cell straight k with hat on top end cell row 1 0 cell negative 3 end cell row 2 cell negative 4 end cell 6 end table close vertical bar equals left parenthesis 0 minus 12 right parenthesis straight i with hat on top minus left parenthesis 6 plus 6 right parenthesis straight j with hat on top plus left parenthesis negative 4 minus 0 right parenthesis straight k with hat on top equals negative 12 straight i with hat on top minus 12 straight j with hat on top minus 4 straight k with hat on top Now space find space out space its space magnitude. end style
Answered by Sneha shidid | 04 Nov, 2018, 12:09: PM

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CBSE 12-science - Maths
find the quadratic equations whose roots are 3 and -2
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Asked by leelasri11663 | 25 Apr, 2024, 11:34: AM
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CBSE 12-science - Maths
what is the general solution of the differential equation dy/DX = e2x + x
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Asked by aishaazmata | 24 Apr, 2024, 08:48: PM
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CBSE 12-science - Maths
(5x)³^cos2x^
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Asked by revengesena | 24 Apr, 2024, 06:08: PM
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CBSE 12-science - Maths
And
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Asked by mt1799363 | 23 Apr, 2024, 12:35: PM
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CBSE 12-science - Maths
Example 17 Solve the following system of equations by matrix method. 3x-2y+3z =8 2x+y-z=1 4x-3y+2z = 4
Asked by mahammadsharifdakhani67 | 16 Apr, 2024, 07:43: PM
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CBSE 12-science - Maths
Please Answer this case study..!!.
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Asked by 20muskaansharma23 | 08 Apr, 2024, 11:31: AM
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CBSE 12-science - Maths
question 13
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Asked by klmn445 | 03 Apr, 2024, 11:33: PM
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CBSE 12-science - Maths
300000/1368
Asked by cherrycharishma512 | 01 Apr, 2024, 12:32: PM
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CBSE 12-science - Maths
The probability that a pen manufactured by a company will be defective is 0.1. If 12 such pens are selected find the probability that i) exactly 2 will be detective ii) at least 2.will be defective iii)none will he defective
Asked by annapoornaa429 | 31 Mar, 2024, 08:23: PM
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CBSE 12-science - Maths
limit x tends to zero tanx-sinx/x^3
Asked by shirishakuruva477 | 28 Mar, 2024, 09:52: PM
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