In the test suite, the correct answer should be (1+sin(x))./cos(x)+cos(x) ./ (1+sin(x)) % note the dot-slash in the second term
Well, at least if we assume that it was meant to be consistent with the problem statement :)
Note that this problem uses the word solve when it needs to say EVALUATE.
I support John D'Errico's comment: equations can be solved, but expressions cannot.
Also, it is pointless having the solution method exposed in the Test Suite. See further discussion at Problem 44617 &c.
Back to basics 22 - Rotate a matrix
sum of first 'n' terms
04 - Scalar Equations 1
Rotate a matrix for 180 degree
Output a vector which is table of 9
Pointwise multiplication of vectors.
Display positive elements of matrix.
Find the sides of an isosceles triangle when given its area and height from its base to apex
Set x value to each even index of vector y.
Calculate the sum of elements of n*n Hilbert matrix.
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