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Norma-Jean [14]

3 years ago

8

Consider (cosine (StartFraction pi Over 2 EndFraction) = I sine (StartFraction pi Over 2 EndFraction) ) and z = 3 (cosine (Start

Fraction 3 pi Over 2 EndFraction) = I sine (StartFraction 3 pi Over 2 EndFraction) ).. What is w + z expressed in polar form?

1 answer:

Vladimir79 [104]3 years ago

7 0

Answer:

B

Step-by-step explanation:

got it right on EGDE 2020

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Answer:#carry on learning

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The grade 10 class is going to bake muffins. The recipe that they are going to use requires the following ingredients: RECIPE ✓2

Svet_ta [14]

The conversion of 2 liters into millimeters from the information regarding the muffins is 2000ml.

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4 0

2 years ago

HELP PLEASE!<br> a + 2 2/5 = 4 3/10

amm1812

Answer:

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Step-by-step explanation:

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3 years ago

Find the extreme values of f(x y)=xy subject to the constraint x^2 + y^2 -4 = 0

KATRIN_1 [288]

Via Lagrange multipliers:

$L(x,y,\lambda)=xy+\lambda(x^2+y^2-4)$

$L_x=y+2\lambda x=0$
$L_y=x+2\lambda y=0$
$L_\lambda=x^2+y^2-4=0$

$yL_x=y^2+2\lambda xy=0$
$xL_y=x^2+2\lambda xy=0$
$\implies yL_x-xL_y=y^2-x^2=0\implies y^2=x^2$
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So we have four critical points to consider, $(\sqrt2,\sqrt2),(-\sqrt2,\sqrt2),(\sqrt2,-\sqrt2),(-\sqrt2,-\sqrt2)$ . If both coordinates are positive or both are negative, we get a maximum value of $(\pm\sqrt2)^2=2$ ; otherwise, we get a minimum of $(-\sqrt2)(\sqrt2)=-2$ .

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3 years ago