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irina [24]
2 years ago
9

The following equation is often referred to as Euler's Formula; e^pii+1=0 Use what you know about complex numbers to show that t

his equation is true. In other words, show that e^pii+1=0 __ If someone could please help me understand the proof and the answer to this ill give you brainliest!! thank you
Mathematics
1 answer:
Sav [38]2 years ago
6 0

Answer:

\large \boxed{e^{i\pi}+1=0}

Step-by-step explanation:

Hello, please consider the following.

For any x real number,

e^{ix}=cos(x)+i\cdot sin(x)\text{, right? So}\\\\e^{i\pi}=cos(\pi)+i\cdot sin(\pi)\\\\e^{i\pi}=-1+i\cdot 0=-1\\\\\text{ We add 1 to both sides of the equation.}\\\\\large \boxed{e^{i\pi}+1=0}\\

Hope this helps.

Do not hesitate if you need further explanation.

Thank you

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Answer:   16 litres

Step-by-step explanation:

A:   1l          x  km

B:   1l         x+5   km

Running 400 km   A used   400/x  litres

Running  400 km  B used  400/(x+5)  litres

400/x- 400/(x+5)= 4

400*(x+5)- x*400-4*x*(x+5)=0

400*x+2000-400*x-4*x²-20*x=0

2000-4*x²-20*x=0     difide by 4 both sides of equation

500-x²-5*x=0

Lets solve the equation using discriminant:

D=5²-(-1)*4*500=2025

sqrt(D)=45

x1= (5+45)/(-2)= -25          x2=(5-45)/(-2)=20

x1=-25     x2=20

x1<0 so is not the solution of the problem ( number of litres can't  be negative)

So A uses  litr per x=20 km     and B uses 1 litr per 20+5=25 km

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2 years ago
Answer will give brainliest
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An angle measures 2.2° less than the measure of its complementary angle. What is the measure of each angle?
Pie

Answer:

28 and 62

Step-by-step explanation:

complementary angles add up to 90o

x+(x-34) =90

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Answer: 4 cakes left in all.


Step-by-step explanation:

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Therefore, The number of cakes left in all=4

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