I want to put in the plus or minus symbol (+/- in ASCII) into a text region (standard math), as in the quadratic formula.  I am using the classic interface in version 9.5.  Can this be done?

Alla

Maple Help (9.5) lists 15 coordinate systems, but provides no information on any of them.  I am of course familiar with the Cartesian and polar systems, so no additional information is required.  But I would like definitions for the other 13, e.g.,  Cassinian.

Allan

I have been working on equations containing trig functions, using manual methods, Maple's solve, and Maple's Roots, each as a check on the others. Up to now, I've been able to resolve discrepancies, but Roots balked on the following problem, and I don't know why. _EnvAllSolutions := true; solve( {sin(3*alpha) - 0.34},{alpha}); {alpha = 0.1156 + 0.8159 _B27~+2.094_Z39~} with(Student[Calculus1]):Roots( sin(3*alpha) - 0.34,alpha = 0..12); [ ] Roots doesn't like 0.34 & some other constants but the following with constant 1 does give me an answer: with(Student[Calculus1]):Roots( sin(3*alpha) -1,alpha = 0..12);

I am looking for a program that will accept equations containing trig functions, determine whether they are identities, & if so, display the proof line by line. For example,the following equation can be proven to be an identity in about 11 steps: sec(u + t) = (cos(u)*cos(t)+sin(u)*sin(t))/(cos(u)^2-sin(t)^2) If such a program does not exist, I think it might be a useful exercise to write one. Alla

I'm trying to solve cos(x/2) = 1/2. Both manual methods & graphing indicate that the two smallest nonnegative solutions are 2Pi/3 and 10Pi/3. However, Maple gives me > {x = 2/3*Pi-4/3*Pi*_B2+4*Pi*_Z4}; Maple agrees that the smallest nonnegative solution is 2Pi/3. The second solution is 2Pi/3 - 4Pi/3 = -2Pi/3. This is coterminal with 4Pi/3 but it is also coterminal with the apparent correct answer 10Pi/3. But how would I know that from Maple's answer?