a quadrilateral ABCD is drawn to circumscribe a circle. prove that AB + CD = AD + BC
verify LMV theorem for f(x) =√25-x² in [-3,5]
find k f(x)= 3x+4tan2x/x x is not = 0, k when x=0 at x=0
the number integers which has not perfect square between16^2 and 17^2 is
how the last step is came????