Other Math Archive: Questions from July 24, 2022
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1 answer
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Prove that the next set A under operations a (+)b and a (*)b. Is a commutative ring with unity, find the unit and what are the only elements with multiplicative inverse. A=Z, a(+)b = a=b-1, a(.)b = -a
Prueba que el siguiente conjunto \( \mathrm{A} \) bajo las operaciones \( a \oplus \mathrm{b} \) y \( a(\cdot) b \) es un anillo conmutativo con unidad, halla la unidad y cuales son los unicos element1 answer -
1. In Z9 you will find all the inverse addition and multiplication (if they exist). 2. Does Z9 have zero dividers? Give examples
1) En \( Z_{9} \) halla todos los inversos suma y multiplicacion (si existen) 2) Tiene \( Z_{9} \) divisores de cero? Da ejemplos1 answer -
Compute total differentials \( d y \). a) \( y=\left(x_{1}-1\right) /\left(x_{2}+1\right) \) b) \( y=x_{1} x_{2}^{2}+\frac{x_{1}^{2}-x_{2}^{2}}{x_{1}+1} \)1 answer -
use grade 12 methods
ove \( \frac{\sin (x-y)}{\sin x \sin y}+\frac{\sin (y-z)}{\sin y \sin z}+\frac{\sin (z-x)}{\sin z \sin x}=0 \) [T/I 4 marks]1 answer -
3 answers
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1 answer
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3 answers