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kaheart [24]
3 years ago
13

Explain why it is important to be able to perform matrix operations by hand when a calculator can do them for you.

Mathematics
2 answers:
Assoli18 [71]3 years ago
6 0
Older and did not have that type of match that is on applications.
mestny [16]3 years ago
5 0

Calculators may not always be available.


Finding an inverse by hand allows me to understand the process.


Calculators may not show the elements of a matrix as fractions.


Sometimes it is faster by hand.


A matrix could contain a variable.

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My professor showed us in class today how to use ode45 to solve a differential equation numerically. i would like to use it on m
Brilliant_brown [7]

Yes, ode45 can be used for higher-order differential equations. You need to convert the higher order equation to a system of first-order equations, then use ode45 on that system.

For example, if you have

... u'' + a·u' + b·u = f

you can define u1 = u, u2 = u' and now you have the system

... (u2)' + a·u2 + b·u1 = f

... (u1)' = u2

Rearranging, this is

... (u1)' = u2

... (u2)' = f - a·u2 - b·u1

ode45 is used to solve each of these. Now, you have a vector (u1, u2) instead of a scalar variable (u). A web search regarding using ode45 on higher-order differential equations can provide additional illumination, including specific examples.

7 0
3 years ago
It costs $300 to join the new Superfit Gym.You then pay $15 each month and $2 each time you work out Carlo thinks he will use th
Dahasolnce [82]
300 + (((15+2)x20)x12)
&4380
7 0
3 years ago
PLZ HELP DUE soon x 2/3
sergiy2304 [10]

Answer:

I think the answer is 2. Hope this helps!

7 0
2 years ago
TIMED TEST PLEASE HELP
xxMikexx [17]
1 ) first offer
total payments
375.76×12×4
=18,036.48
Interest paid
18,036.48−16,000
=2,036.48
Second offer
Total payments
390.61×12×4
=18,749.28
Interest paid
18,749.28−16,000
=2,749.28
Larry will save of taking 6% loan
2,749.28−2,036.48=712.8. .answer

2) credit card 1
Total payments
277.09×12
=3,325.08
Interest paid
3,325.08−3,000
=325.08
Credit card 2
Total payments
152.69×12×2
=3,664.56
Interest paid
3,664.56−3,000
=664.56
Susan will save
664.56−325.08
=339.48...answer

Hope it helps!
6 0
3 years ago
Read 2 more answers
The side lengths of the Australian flag are in a ratio of 1:2. If the flag is 5 feet long, what is it’s height?
jonny [76]

height:length

1:2

x feet: 5 feet

You know the length and the ratio of the dimensions. From the ratio you know that the length is twice the height. So height = 5/2 = 2.5 ft.

6 0
3 years ago
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