1.

Function has the property that f(n) (x) = f(n + 2) (x) : n ≥ 1 : n ∈ N Then which of the following is the expression for f(x) in most general form.

A. x+\(\frac{x^3}{3!}+\frac{x^5}{5!}+…..\infty\)
B. 1+\(\frac{x^2}{2!}+\frac{x^4}{4!}+….\infty\)
C. c1 \( \times cosh(x)+c_2\times sinh(x)\)
D. cosh(x) + sinh(x)
Answer» D. cosh(x) + sinh(x)


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