Calculator usage: negative numbers to rational exponents (with odd roots)
Tutoring high school math, scientific calculators are a permanent fascination. The tutor mentions a quirk many might share. Due to and the fact that a common exponent notation is xa=x^a, it follows that (-8)^(2/3)=4. Curiously, of all the calculators in …
Calculator usage: negative numbers to rational exponents (with odd roots) Read more »