Let's examine the following graphs: Again, the period of the original sine curve has changed here, as we would expect. The difference with a negative value of b however, is our sine curves have the same period as the positive values of b above, but now they are reflected across the x-axis. For a direct comparison between positive and negative values of b, click here.
Quick Answer. As of 2014, Joachim Gauck is the president of Germany. The 72-year-old was elected to the position on March 18, 2012, in Berlin after receiving 991 of the 1,228 valid votes.
There is no vice president in Germany under their constitution. The President of Germany (BundesprÃ¤sident) is the head of state but not the head of government - that position is called the Chancellor. Should the presidency become vacant, the authority would be assumed by the President of the Federal Council (legislative upper house).