Do we need to add the sign before the unknown value in the mirror formula?
101342
Deep confusion with conventions and signs in geometric optics
156781
Should I write $i$ before or after the imaginary part?
104410
Why do we omit the negative sign when finding basic angle when solving trigonometric equations?
9195
Joining mirrored object causes half of it to disappear
126261
Extraneous solution from substituting in equations
116283
How to properly interpret a seemingly contradictory result in Mathematica?
157748
Why should the equality of mixed partials be "intuitively obvious"?
100926
Incoherence using Euler's formula
148871
Sign of the vector (especially $g$) while calculating
75720
Adding a label to an expression result
105080
Why are minus signs not working in this equation?
54757
Why is the light reflected at the same angle from mirror?
32769
What means a "$\setminus$" logic symbol?
31165
Is this workaround used by my book to find the value of $1/0$ legitimate?
120235
Clarification of the notation $f: \mathbb{R} \setminus\{3\} \to\mathbb{R}\setminus\{2\}$
144875
No known expression from value to value&... Why?
148649
How do I get a slanted \sum symbol?