Question

Lt
x➡0
$\frac{ \cos(ax) - \cos(bx) }{ {x}^{2} }$
a.
$\frac{ {a}^{2} - {b}^{2} }{2}$
b.
$\frac{ {a}^{2} + {b}^{2} }{2}$
c.
$\frac{ {b}^{2} - {a}^{2} }{2}$
d.
${b}^{2} + {a}^{2}$
Plz send solution.
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Answer 1

Answer:

sorry I didn't know

Step-by-step explanation:

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