(sin(lnx)+cos(lnx)=0
sin[ln(x)] + cos[ln(x)] = 0 cos[ln(x)] cos[ln(x)] tan[ln(x)] + 1 = 0 - 1 - 1 tan[ln(x)] = -1 tan⁻¹[tan[ln(x)]] = tan⁻(-1) ln(x) = -45 e¹ⁿ⁽ˣ⁾ = e⁻⁴⁵ x ≈ 2.8 × 10⁻²⁰
