Next Toppers - 12th Science
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NEXT TOPPERS CLASS 12th LIVE COURSESπŸ“–

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Matrices class 12th 1st free live class ajaaao sab
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Today's Prarambh 1st FREE Class
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πŸ”Ά Tapur Ma'am | 5:00 PM πŸ‘‰ https://www.youtube.com/watch?v=nJS_UAtrUmg
πŸ”Ά Apeksha Ma'am | 8:00 PM πŸ‘‰ https://www.youtube.com/watch?v=N7AYlF1Inw4
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Let A be a matrix such that AΒ³ = 0. Then (I – A)⁻¹ is equal to:
Anonymous Quiz
25%
a) I + A + AΒ²
33%
b) I – A + AΒ²
21%
c) I + A – AΒ²
21%
d) None of these
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Let A and B be square matrices of same order such that AB = BA. Then which of the following is true?
Anonymous Quiz
42%
a) AB is always symmetric
29%
b) AB = BA is not always true
23%
c) A and B are simultaneously diagonalizable
6%
d) A and B are not invertible
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If A is a 2Γ—2 matrix such that AΒ² = I, then which of the following is always true?
Anonymous Quiz
32%
a) A is symmetric
36%
b) A = I
23%
c) A is invertible
9%
d) A is skew-symmetric
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Two identical conducting spheres carry charges +6 ΞΌC and –2 ΞΌC. If they are brought into contact and then separated, what will be the final charge on each sphere?
Anonymous Quiz
39%
A) +2 ΞΌC
13%
B) –2 ΞΌC
6%
C) +1 ΞΌC
42%
D) +4 ΞΌC
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