Extension: Power Series Proof of Euler's Formula

Explanations 3

• To complete this proof, we need to be familiar with the power series for ex, cos⁡x, e^x,\,\cos x,\,ex,cosx,and sin⁡x\sin xsinx. So, just as a refresher: Great! Now that we have …

  By Tim Ratigan, Panavia Shou

• Euler's Formula is not one necessary for most basic algebra classes but is something that still fascinates many students. Throughout one's studies of mathematics, he or she will…

  By Joshua Siktar

• Euler's Formula We've already seen a nice way to represent complex numbers: cis notation. However, there's a certain interesting thing about these. When we multiply them, we add…

  By Eric Zhang, Expii Team, Benjamin