We walk through an optimization problem step by step, clearly explaining how to identify variables, set up the correct function, apply derivatives, and find maximum or minimum values. Each step is ...

Peripheral artery disease (PAD) can lead to serious complications, including lower‑limb amputations. An updated interactive heat map showed PAD‑related amputation rates across the US, stratified by ...

The Charles Schwab Corporation is upgraded to a 'buy' rating, reflecting strong asset gathering and resilience amid Fed rate cuts. SCHW's acquisition of Forge Global strategically expands its private ...

This puzzle looks like it needs calculus… but you’re not allowed to use it. I explore alternative methods to get the answer only using basic math tools. 8 million inflation refund checks sent out ...

Federal Reserve Bank of New York President John Williams said he sees room to lower interest rates again in the near term as the labor market softens, reviving investor expectations for a December ...

Just a few weeks ago, a December interest rate cut was viewed as practically a done deal by many economists. Now, with fresh government data showing solid U.S. job growth in September, many ...

An illustration of a magnifying glass. An illustration of a magnifying glass.

Some consumers have been hoping that Fed rate cuts would lead to lower mortgage rates so they can buy a home or refinance their mortgage, but long-term mortgage rates move independently from the ...

Rising from 2.7% in July, US inflation sped to a nine-month high of 2.9% year-over-year in August 2025, meeting market expectations, while monthly CPI soared. 0.4%, the best increase since January. At ...

Terry Lane is a writer for Investopedia with 25 years of experience in journalism and communications. He covers personal finance, Congress, government regulations, and economics. Paul Bersebach / ...