There is a subtle difference between Arctan and arctan
Arctan(x) is an inverse function such that the range is only the principla value
meanwhile, arctan(x) takes on infinitely many values
hope this helps
Fewer job opportunities in the Northeast and Midwest
He was from the South, and Southerners thought he should support their cause. ... It created a dividing line between free and slave states???
China's economic system before the late-1990s, with state ownership of certain industries and central control over planning , has enabled the government to mobilize whatever surplus was available and greatly increase the proportion of the national economic output devot
