media cuadrática-4, 5, 6, 9

Topic

Full pad

`x`²	`x`^□	log_□	√☐	^□√☐	≤	≥	□□	·	÷	`x`^◦	π
(☐)^′	`ddx`	∂∂`x`	∫	∫_□^□	lim	∑	∞	`θ`	(`f` ◦ `g`)	`f`(`x`)

☐²

x^☐

√☐

^□√☐

□□

log_□

θ

∞

∫

ddx

≥	≤	·	÷	`x`^◦	(☐)	\|☐\|	(`f` ◦ `g`)	`f`(`x`)	ln	`e`^☐
(☐)^′	∂∂`x`	∫_□^□	lim	∑	sin	cos	tan	cot	csc	sec

simplify solve for inverse tangent line

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quadratic mean −4, 5, 6, 9

Solution

6.28490…

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Solution steps

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Quadratic Mean

For a data set containing the values a₁, … , a_n (n elements)
the quadratic mean (root mean square), x_rms=√x₁²+x₂²+…+x_n²n

Compute the sum of the squared terms of the data set: x₁²+x₂²+…+x_n²=158

Compute the number of terms in the data set: n=4

Compute √x₁²+x₂²+…+x_n²n : 6.28490…

=6.28490…

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Notebook

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−▭▭	<	7	8	9	÷	`AC`
+▭▭	>	4	5	6	×	☐☐☐
×▭▭	(	1	2	3	−	`x`
▭ \|▭	)	.	0	=	+	`y`

media cuadrática-4, 5, 6, 9

Solution

Solution steps

Number Line