Expand the following function in f(x)=7x²+4x 0 use the following notation to answer the questions. the fourier series for f(x), hen f(x)= ao 2 + 8 Σ can cos n=1 VIT P a s of the form _f(x)= (₂+ & (9₁(h₂x) + 9₂ (n, x)) n=1 Fourier series. x + bn sin hπ x ) _) Find the function g₁ (h, x) (your answer should be a symbolic function of x and n)

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