I drove the 2026 Ford Explorer Tremor: Here's my honest review of the SUV that replaced the Timberline—and then some

Souped-up cop cars have occupied cult classic car collections for as long as petrolheads have daydreamed about outrunning Johnny Law. The contemporary Ford Explorer ST represents the latest entry into ...

An OpenAI model solved a famous math problem that stumped humans for 80 years

In mid-May, OpenAI announced that an internal AI model had disproved the Erdős unit distance conjecture, a famous problem in ...
BBC

Parallel and perpendicular lines

The graphs above, \(y = 2x + 1\) and \(y = 2x - 2\) have the same gradient of 2. The lines are parallel. State the equation of a line that is parallel to \(y = 3x + 7\). To be parallel, two lines must ...
IEEE

$\mu$-Stability of Positive Homogeneous Differential-Difference Equations With Unbounded Time-Varying Delays

Abstract: This note studies the stability problem of nonlinear positive differential-difference equations with unbounded time-varying delays. Under assumptions on the nonlinear vector fields, such as ...
Investopedia

Quality Spread Differential (QSD): What it Means, How it Works

Rajeev Dhir is a writer with 10+ years of experience as a journalist with a background in broadcast, print, and digital newsrooms. Gordon Scott has been an active investor and technical analyst or 20+ ...

Merton Model: Assessing Corporate Credit Risk with Precision

Learn about the Merton Model for evaluating corporate credit risk, developed by Robert Merton in 1974, and used by analysts ...
BBC

Solving quadratic equations - Edexcel

The coordinates of the turning point and the equation of the line of symmetry can be found by writing the quadratic expression in completed square form. Find the equation of the line of symmetry and ...