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. time() time. :

import time

time1 = time.time()

L=[x*x for x in range(1,100)]

print ("=",time.time()-time1)

matplotlib

import matplotlibasmpl

mpl.rcParams['font.size'] = 15

from PyQt4 import QtCore, QtGui

import sys

app = QtGui.QApplication(sys.argv)# app () - QApplication

w = QtGui.QWidget()

Fn=QtGui.QFileDialog.getOpenFileName(w,'Open file', '',"Comma separated table files.csv (*.csv)")

np.sum()

1. L n.

2. , L , f(x)= lambda

3. y=(2*x^2-3x-5)*sin(3*x). 0 5 0,1. .

4. y=X*sin(X) 0 10. .

5. diag3.txt , ( ), - , ( ). :

a.

b. 0⁰ 720⁰.

c. , . 720 -360⁰ 360⁰. 360⁰ 1080⁰, .

d. , .

e.

f. , , ,

g.
, : , λ=0.24, ε=14. p(V)

h. 0⁰ 720⁰. , () , 2 .

i. ( 0 720 ). , .

6. M.txt , , - ( 0 720 ).

a. M(α), M(α+60) ( 60⁰), M(α)+M(α+60).

b. . "" .

c. ( ) "" .

7. TZ.txt , , - X Y , ( 0 720 ).

a. ( [X,Y]).

b. ( [X,Y]).

c. X Y. ( - [X,Y]). 90 [X1,Y1] [X1,Y1].

d. X Y. .

8. , . .

9. : 500⁰, 20⁰. t. - Δt:



α=1,6*10-5 2/.
.

10. 2020 . , 8 . , , .

11. 2 , . 2 .

 

 

1) z u /. . .

2) X Y, . . Y1, X1 : X1=linspace(x1,x2,n). . X1 X, . X1 X, . Y1.

3) . , , , , , .

4) , TeX, . : T_max T_{max}. , . , , , ..

5) . , F=pi*d^2/4. F=pi*(d^2)/4. .

6) -1*, -. , F=-a-b*(-sin(c)) F=-1*a-b*(-1*sin(c)).

7) , Python.

8) , . : S - , rate_y - , % , n , . :
I = pV * rate
: pV- , rate - , 1/12 .
:
Pmt =V+ I
: V - .
.
V =S / n .
http://bankirsha.com/how-calculate-cost-of-credit.html

9) , . :, S - , rate_y - , % , n , . :
I = pV * rate
: pV- , rate - , 1/12 . :
Pmt =V+ I
: V - .
. , , ( , ) , . .
:
Pmt = S * rate / [ 1 - (1 / (1 + rate))n ]
http://bankirsha.com/how-calculate-cost-of-credit.html





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