Problem 3.3. For periodic triangular function shown in Figure 3.5, we found the complex Fourier series in Example 34 What is the real Fourier series representing the same triangular function? In other words, find coefficients, Ons and b, for triangular function shown in Figure 3.5. Note that given triangular function is an even function. (Hint: You can can use the complex Fourier series results for short cut). Problem 3.4. What is the Fourier series representing periodic function y = cosh r as plotted in Figure 3.72 1.6 1.4 > 1.2 1.0 0.8 0.0 1.0 2.0 4.0 T Figure 3.7: Periodic coshr function. Problem 3.3. For periodic triangular function shown in Figure 3.5, we found the complex Fourier series in Example 34 What is the real Fourier series representing the same triangular function? In other words, find coefficients, Ons and b, for triangular function shown in Figure 3.5. Note that given triangular function is an even function. (Hint: You can can use the complex Fourier series results for short cut). Problem 3.4. What is the Fourier series representing periodic function y = cosh r as plotted in Figure 3.72 1.6 1.4 > 1.2 1.0 0.8 0.0 1.0 2.0 4.0 T Figure 3.7: Periodic coshr function