1.

The fourth derivative of f(x) = sin(x)sinh(x) ‚ÅÑ x at x = 0 is given by$

A. 0
B. <sup>π</sup>⁄<sub>2</sub>
C. 45
D. 4
Answer» B. <sup>‚âà√¨‚àö√ë</sup>‚Äö√Ñ√∂‚àö√ñ‚àö√´<sub>2</sub>


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