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\(\pi\)
e
\(\frac{a}{b}\)
!
←
→
(
)
\(\sqrt{\,}\)
\(a^{b}\)
7
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\(\div\)
log
ln
4
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\(\times\)
cos
cos⁻¹
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-
sin
sin⁻¹
0
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+
tan
tan⁻¹
A certain radioactive substance loses \(12\pourcent\) of its mass each year. Initially, the sample weighs 200 g.
Determine a model for \(M_n\), the mass (in grams) remaining after \(n\) years.
\(M_n=\)
\(\pi\)
\(e\)
\(x\)
\(n\)
\(u_n\)
\(f\)
\(\frac{a}{b}\)
\(\sqrt{\,}\)
\({a}^{b}\)
\(\ln{\,}\)
\(\log{\,}\)
!
7
8
9
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→
\(\sin{\,}\)
4
5
6
(
)
\(\cos{\,}\)
1
2
3
\(\times\)
\(\div\)
\(\tan{\,}\)
C
0
.
+
-
=
Is this an example of exponential decay?
\(Yes\)
\(No\)
Calculate the mass remaining after 10 years.
\(\pi\)
\(e\)
\(x\)
\(n\)
\(u_n\)
\(f\)
\(\frac{a}{b}\)
\(\sqrt{\,}\)
\({a}^{b}\)
\(\ln{\,}\)
\(\log{\,}\)
!
7
8
9
←
→
\(\sin{\,}\)
4
5
6
(
)
\(\cos{\,}\)
1
2
3
\(\times\)
\(\div\)
\(\tan{\,}\)
C
0
.
+
-
=
g (round to the nearest integer)
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