Outline

An ordinary calculator inputs calculation elements and operators,

and finally an equal "=" is pressed and the answer is calculated,

This application back calculates the calculated elements from the answer.

For example, the formula for calculating the resonant frequency

Resonant frequency = 1 / (2π ((capacitance × inductance))

Because this equation is an equation to find the resonant frequency from capacitance (μF) and inductance (μH)

If capacitance = 3uF and inductance = 5uH (u is micro)

If the resonance frequency kHz = 1 / (2π√ (3 uF × 5 uH)) and this is calculated

It can be calculated as 41.0936 kHz = 1 / (2π√ (3 uF × 5 uH)).

Here, I would like to set the frequency to 50 kHz, but what is the capacitance?

So the frequency is 50kHz, the inductance is 5uH, and the capacitance is replaced with ??? uF

→ 50 kHz = 1 / (2π ((??? uF × 5uH)) Where would you like to know Replace with “? ? ?”

And if you do reverse calculation

→ 50 kHz = 1 / (2π ((2.02642 uF × 5 uH)) The answer comes out like this.

This equation is a formula to find the resonance frequency from capacitance (μF) and inductance (μH)

In order to calculate inverse calculation of resonance frequency and inductance to determine capacitance, it is necessary to solve the equation about capacitance in advance. However, in this application, it is necessary to calculate the inverse operation Hole filling calculation).

In other words, if you obtain the resonance frequency from the actual capacitor capacity and inductance, this time you can use the equation to calculate the capacitance (capacitance) of the capacitor back to obtain the desired frequency.

Of course, inductance can be calculated backward by fixing the capacitor capacity.

There is no limit to the number of elements that make up the formula, so mechanical design, electrical design, architecture, chemistry .... loan calculations and application of tax calculation are infinite.

There are no restrictions on the number and name of the variables to be constructed, but the following restrictions apply.

1. Even if variables with the same name exist in more than one place, they are managed in a single way. (From V1.20)

However, it is not possible to reverse calculation object.

2. The multiplier can not be a variable.

3. Expressions with multiple solutions can not be analyzed.

There is a reserved word that constitutes an expression, and the following can not be a variable name.

SIN, COS, TAN, PAI, ASIN, ACOS, ATAN, LOG, SQRT, PAI

Disclaimer: The author and stakeholders do not take any responsibility in the calculation result etc. of this program. Please perform sufficient verification separately.