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Exercise 3.60: With power series represented as
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streams of coefficients as in Exercise 3.59, adding series is implemented
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by add-streams. Complete the definition of the following procedure for
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multiplying series:
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(define (mul-series s1 s2)
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(cons-stream ⟨??⟩ (add-streams ⟨??⟩ ⟨??⟩)))
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You can test your procedure by verifying that
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sin
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2
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x
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+
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cos
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2
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x
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=
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1
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,
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using the series from Exercise 3.59.
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