4 ms·
It also equals x with appropriate assumptions (x > 0).
by MForster 7mo ago
It also equals x with appropriate assumptions (x > 0).
- exe34 7mo agoso there's an unconditionally correct answer (it's also equal to abs(x) for x>0), and then there is an answer that is only correct for half the domain, which requires an additional assumption.
- crubier 7mo agosqrt(square(i)) != abs(i) So no, it’s not unconditionally correct either.
- notarget137 7mo agoWell, then sin(x) = x if x is infinitely small
- kccqzy 7mo ago> Assuming[x == 0, Simplify[Sin[x] == x]] Mathematica returns True. And any middle schooler will also tell you it's true. The only reasonable interpretation of "infinitely small" is that it's zero.