All categories

2 years ago

What is the square root of -1? Why is it necessary to define i?

Mathematics

2 answers:

sweet [91]2 years ago

8 0

Answer:

Step-by-step explanation:

Square roots are always the oposite

Troyanec [42]2 years ago

4 0

The square root of negative -1 is positive 1.

You might be interested in

Uppose a triangle has a,b and c what must be true?

alexdok [17]

Obtuse: b^2 + c^2 > a^2

Right: b^2 + c^2 = a^2

Acute: b^2 + c^2 < a^2

A^2 + B^2 + c^2 - 2bc*cosA
As (A), is an Obtuse cos A is Negative say 2bccosA = - k then;
a^2 = b^2 + c^2 + k
a^2 > b^2 + c^2

So, your Answer would be (B)
Hope this helps!!.!

6 0

3 years ago

Read 2 more answers

Translate to an equation and sole: The quotient of h and 26 is -52

rusak2 [61]

<h2>Answer:</h2><h2>h/26=-52</h2><h2> *26=*26</h2><h2>h=-1352</h2><h2>Hence, h equals -1352 when solved in a equation.</h2><h2>Hope this helps!!! PLZ MARK BRAINLIEST!!!</h2>

7 0

3 years ago

Which pair of functions have the same domain? A. F(x)= sin x and g(x) = tan x B. F(x) = cos x and f(x) = csc x C. G(x) = tan x a

EastWind [94]

Answer:

The correct choice is D

Step-by-step explanation:

The trigonometric functions, $\sin x$ and $\cos x$ are defined for all real numbers.

$\tan x=\frac{\sin x}{\cos (x)}$ , this function is not defined where $\cos x=0$ .

$\cot x=\frac{\cos x}{\sin (x)}$ , this function is not defined where $\sin x=0$ .

$\csc x=\frac{1}{\sin (x)}$ , this function is not defined where $\sin x=0$ .

For option A

The domain of $f(x)=\sin(x)$ is all real numbers.

The domain of g(x) =tanx is $x\ne \frac{(2n+1)\pi}{2}$

For option B

The domain of $f(x)=\cos(x)$ is all real numbers.

The domain of f(x) =csc(x) is $x\ne n\pi$

For option C,

The domain of G(x) =tanx is $x\ne \frac{(2n+1)\pi}{2}$

The domain of f(x) =cot(x) is $x\ne n\pi$

For option D;

The domain of f(x) =cot(x) is $x\ne n\pi$

The domain of f(x) =csc(x) is $x\ne n\pi$

3 0

3 years ago

Read 2 more answers

a group of 25 sixth graders, 40% of them said they had never visited another state. How many students said they had never visite

diamong [38]

Correct Answer: 10 students have never visited another state
40/100 × 25 =
40 is out of 100 because percentages always is represented by 100 (cent)

cross out the zero's equally top and bottom
so it would become: 4/100 × 25 = 4 ×25 = 100
then add the denominator
100/10 is our final resolution

cross out the zeros evenly and answer will give you 10.

6 0

3 years ago

Read 2 more answers

SOLVE ATTACHMENT 30 POINTS!!!!!!

Masteriza [31]

Answer: