What is matrix inverse

Here is my documentation after learning the introduction of AI in courserERA.

Overview

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Null result in economic is when the output does not supporting your hypothesis

Hi, I want to raise the issue related to know whether your OLS is ok or not. 

The **45-degree line** in economics and geometry refers to a line where the values on the x-axis and y-axis are equal at every point. It typically has a slope of 1, meaning that for every unit increase along the horizontal axis (x), there is an equal unit increase along the vertical axis (y). Here are a couple of contexts where the 45-degree line is significant:

The **hyperinflation in Hungary** in the aftermath of World War II (1945–1946) is considered the worst case of hyperinflation in recorded history. The reasons behind this extreme economic event are numerous, involving a combination of war-related devastation, political instability, massive fiscal imbalances, and mismanagement of monetary policy. Here's an in-depth look at the primary causes:

**Neutrality of money** is a concept in economics that suggests changes in the **money supply** only affect **nominal variables** (like prices, wages, and exchange rates) and have **no effect on real variables** (like real GDP, employment, or real consumption) in the **long run**.