OKAWA Electric Design

Math tools

This page is a web application that solve an equation of higher degree, simultaneous equations, partial fraction decomposition. Transfer function analysis and design tool

Equation of higher degree

a0xn+a1xn-1+ ••• +an-1x+an=0

Example

x4-10x3+35x2-50x+24=0

The following form is an example to input G(s). Use the right form to simulate.

(maximum n=12)
a=


Partial fraction decomposition

Transient analysis condition is nm. maximum n=12

Example

f(x)= 10x3+80x2+200x+154
x4+10x3+35x2+50x+24
The following form is an example to input. Use the right form to calculate.

b=
a=
b=
a=


Simultaneous equations



Example

2x1 -7x2+6x3=4
-5x1      -x3=1
4x1+3x2    = -9
The following form is an example to input. Use the right form to calculate.

maximum n=8


Scientific Calculator

Example

e-(1e3/100e-6) cos 10e3/(2π*100e-6)

The following form is an example to input. Use the right form to calculate.


PIπ
Ee (base of the natural logarithm)
abs(x)|x|
pow(x,y)xy
sqrt(x)x
exp(x)ex
log(x)logex
LN10loge10
sin(x)sin x (x is in radian)
cos(x)cos x (x is in radian)
tan(x)tan x (x is in radian)
asin(x)asin x (result is in radian)
acos(x)acos x (result is in radian)
atan(x)atan x (result is in radian)

Example

Variables can be used. Variables are held while the page is open.

L=100e-6 [Calculate]
C=47e-6 [Calculate]
w0=1/(L*C) [Calculate]
f0=0.5*w0/PI [Calculate]

equ. =
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ans. =