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.
The role of the German president. The resignation of German President Christian Wulff has once again called into question the role of the president. DW takes a look at Germany's highest office, which plays a largely ceremonial role.The president's role is largely ceremonial for historical reasons. With the resignation of Germany's president, Christian Wulff, the country's Federal Convention will now be tasked with the responsibility of voting for a successor.Compared with leaders of other countries, the German president has few opportunities to influence day-to-day politics in his or her country.he role of the German president. The resignation of German President Christian Wulff has once again called into question the role of the president. DW takes a look at Germany's highest office, which plays a largely ceremonial role.