2 years ago

Why is this hard. I'm not a genius. but genius can only solve this problem.

Mathematics

2 answers:

shtirl [24]2 years ago

8 0

Answer:

very easy

Step-by-step explanation:

miss Akunina [59]2 years ago

6 0

Answer:

4 + 4 = 8

+ +

8 - 4 = 6

|| ||

13 8

___________________________

i dont iknow if im right :(

You might be interested in

Which two polygons is this polygon subdivided into?

marysya [2.9K]

Answer:

no diagram

Step-by-step explanation:

8 0

2 years ago

Evaluate the Riemann sum for (x) = x3 − 6x, for 0 ≤ x ≤ 3 with six subintervals, taking the sample points, xi, to be the right e

DENIUS [597]

Hello,

Reminders:
$$\sum_{i=1}^{n} i= \dfrac{n(n+1)}{2}$


$
$$ \sum_{i=1}^{n} i^2= \dfrac{n(n+1)}{2}$

$
$$ \sum_{i=1}^{n} i^3= \dfrac{n^2(n+1)^2}{4} $
$

$n=6\\
x_{0}=0\\
x_{n}=3\\
\Delta= \dfrac{x_n-x_0}{n}=0.5\\

$
$x_{i} =0+\Delta*i= \frac{i}{2}$

$\sum_{i=1}^{n}\ \Delta*f(x_{i})=\sum_{i=1}^{6}\ \dfrac{i^3/8-6i}{2}$
$$= \dfrac{1}{2}\sum_{i=1}^{6} (\frac{i^3}{8} -6i)=\dfrac{1}{16}*\frac{(6*7)^2}{4}- \frac{9*7}{2}= -3.9575$

Download xls