Based on the analysis of the text, it is difficult to determine with certainty whether the above text was written by AI or a human. However, there are a few indicators that suggest the text may have been generated by AI.

Lines that are likely written by AI: - “Expected cash flow is equal to shares times the sale price.” - “Total purchasing power is equal to $100,000 multiplied by two.” - “Share count equals remaining loan balance / share price” - “Total return for Dave is change in position value / initial investment” - “Equity is -$56,500 + $60,000.” - “Total return calculated follows: Cash inflows minus Cash outflows plus changes in share value.”

Lines that are likely written by a human: - “Legendary jouster David Malory, well known as Daring Dave, sold his equipment to pursue a profitable new career in stock investment.” - “In this article, Dave’s choice to borrow on margin will be examined along with the reasons why he lost so much money.” - “Margin accounting principles utilizing the brokerage statement:” - “The main error Dave made was taking out a margin loan, which greatly increased the danger of his investment.”

Parameters that AI detectors can catch in AI-generated text: - Consistency in writing style and tone - Unusual or repetitive sentence structures - Lack of personal or subjective language - Use of technical or specific terminology without proper context - Inconsistent or incorrect use of grammar and punctuation

It is important to note that without access to the original source or more information about the text, it is challenging to determine the exact percentage of the text that was written by AI or a human.