MHB Join the MA104 College Algebra Forum at Lehman College

mathdad
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I would like to see a College Algebra forum. It is a course at Lehman College that gives students lots of trouble. At Lehman, the course is known as MA104.
 
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It's a good suggestion, though I took its equivalent in High School, not College. (Not an AP course.)

-Dan
 
MAT 104 College Algebra
Rational expressions, integer and rational exponents, quadratic formula, complex numbers, exponential and logarithmic functions, conic sections, trigonometry. Mathematics laboratory attendance may be assigned at the discretion of the instructor.
I think they all fit in the forums that already exist as https://mathhelpboards.com/trigonometry-12/ already has its own forum and the rest:

Rational expressions, integer and rational exponents, quadratic formula $\to $ https://mathhelpboards.com/pre-algebra-algebra-2/

Complex numbers, exponential and logarithmic functions, conic sections $\to$ https://mathhelpboards.com/trigonometry-12/
Some of those topics may fit either forum in any case. Someone correct me if this doesn't sound right.
 
Thread 'Derivation of equations of stress tensor transformation'
Hello ! I derived equations of stress tensor 2D transformation. Some details: I have plane ABCD in two cases (see top on the pic) and I know tensor components for case 1 only. Only plane ABCD rotate in two cases (top of the picture) but not coordinate system. Coordinate system rotates only on the bottom of picture. I want to obtain expression that connects tensor for case 1 and tensor for case 2. My attempt: Are these equations correct? Is there more easier expression for stress tensor...

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