\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
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\(\pi\)
e
\(\frac{a}{b}\)
!
←
→
(
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\(\sqrt{\,}\)
\(a^{b}\)
7
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9
\(\div\)
log
ln
4
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\(\times\)
cos
cos⁻¹
1
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-
sin
sin⁻¹
0
.
=
+
tan
tan⁻¹
A smartphone is discounted by \(20\pourcent\) during a clearance sale. At the checkout, an additional \(10\pourcent\) discount is applied to the already reduced price. Calculate the global percentage change.
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