, . , .
, gx gy, [::] Matrix ( View-Toolbars->Matrix). , x 0.1, . Matrix, , .
m..n - [1- ],[ + ]..[ ].
- G:=lspline(gx,gy) (! L , i!). . , Y interp(G,gx,gy,x). . , MathCad.
, , y(x):=x2. . 0y y(x), - x.
Mathcad Excel.
)=2 ,=2+1,=(-2)2
)=1/, =1/(x-2),y=1/x -2 .
Mathcad Excel.
1.y=(x-2)2-1
2.y=1-√1-x
3.y=√x+4 -2
Mathcad Excel.
y = sin (x - π/3).
y = cos x - 3
y = - sin x + 1,5
y = cos (x - 1) 3
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6
.
:
1) : . . , .
2) . ., .
3) .
:
, , .
, . " ", " ", " " .. , - "". . .
|
|
:
.
:
- :
p = p 0 e h / H
- :
V = v 0 e - kt / m
- :
m (t)= C e kt = m 0 2- t / T
- :
T = T 1 - C e - kt
:
100. ( 0). 10 80, 64. 25?
:
R1=100-k1t, R2=100e-k2t,
e-1Qk1 =8/10, e-1Q2=64/100, -k1= (4/5)1/10, -k2=(64/100)1/10.
t, R1(t)-R2(t)=25. :
100(-k1t- -k2t)=25, .. -k1t- -k2t=1/4.
(4/5)t/10 (64/100)t/10=1/4;
(4/5)t/10 (16/25)t/10=1/4;
(4/5)t/10 (4/5)2t/10=1/4.
=(4/5)t/10, :
-2+ 1/4=0.
, =½, . (4/5)t/10=½. 10, t/10 * lg 0,8 = lg ½, t=10(-lg2)/3*lg2-1=31,06, . t=31,06.
: 31,06 .
2) m(t) = m02-t/T . , m0 = 12 -24, = 15 . -24 3 ?
:
, :
12*2-t/15>3
2-t/15>1/4
2-t/15>2-2
-t/15>-2
t<30
: 30 .
.
, :
- ;
- ;
- ;
- .
.
1) 59000 , , 3 10?
:
3x=59000; lg 3x = lg 59000; x lg3 =lg 59000;
10 x =1010 = 100
: 100 .
2) 50 2 . 15 . 70, 3?
. t 50 70 - :
= γ(t2 - t1)/10
t2 = 70 , t1=50C, υt2 υt1 .
:
= 3(70-50)/10 = 32 = 9
.. 9 .
, t ,
,
τ t1 t2, τ t2 = τ t1 * υt1/ υt2
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, τ t1= 135 ., t 70: τ t2= 135 * 1/9 = 15
: τ t2=15 .
.
. , : N=N0ekt. , .
:
1) 5 . . (, ) 8%. ( ) 2 . , ?
: :
2 . ;
5 . ;
p = 8 - % .
1000, :
.
: 11 .
2) .
q . t p . , ( ) B .
: , , , , .
, , , , , .. , , . t , , .. ,
, . , x, , .. 10,
:
.
1) . . 8 5 . , .. , 2- . ? , !
, . :
5+8=92;
8+5=92+2;
, , -12 , -4 .
2) , , 13 . . 75%, - 140%. , 2 . :
1) ?
2) ?
: . . . :
+=13;
1,75+2,4=26.
, , :
1) 8 ., -5 ..
2) 14 ., -12 ..
3) , . , , .
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: . , . , =570-3. (1) , , . =. (1), =(570-3), =-32+570. , =-32+570 . =-570/(-3)*2=95.
=27075. , 27075 , 95 . =570-3*95=285 .