Mathematics
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OpenStudy (trisarahtops):
Calculus help!! MEdal!!
10 years ago
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OpenStudy (trisarahtops):
10 years ago
hartnn (hartnn):
and where are you stuck?
10 years ago
OpenStudy (trisarahtops):
i don't know where to begin to solve this problem
10 years ago
hartnn (hartnn):
\(\text{derivative of integration} \\
\Large \dfrac{d}{dx}\int \limits_{f(x)}^{g(x)}h(x)dx = h(g(x))g'(x)-h(f(x))f'(x)\)
here, f(x) is a constant, so 2nd term will not be present
10 years ago
OpenStudy (trisarahtops):
what 2nd term?
10 years ago
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hartnn (hartnn):
\(\\
\Large \dfrac{d}{dx}\int \limits_a^{g(x)}h(x)dx = h(g(x))g'(x)\)
10 years ago
OpenStudy (trisarahtops):
oh you mean f(x)
10 years ago
OpenStudy (trisarahtops):
so i should just set up my problem like this and solve?
10 years ago
hartnn (hartnn):
yes
10 years ago
hartnn (hartnn):
if you compare,
a = 2,
g(x) = x^2
h(x) = \((e^x)^3\)
10 years ago
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OpenStudy (trisarahtops):
oh ok i'll give it a try
10 years ago
hartnn (hartnn):
let me know what u get..
10 years ago
OpenStudy (trisarahtops):
wait what is g'(x)?
10 years ago
hartnn (hartnn):
g(x) = x^2
g'(x) is the derivative of g(x) = ...
10 years ago
OpenStudy (trisarahtops):
oh okay just making sure
10 years ago
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OpenStudy (trisarahtops):
h(g(x)) g'(x)
e(x^2)^3 x^2
x^6e 2x
2x^7e
10 years ago
hartnn (hartnn):
its not
\(e\times x^2\)
its
\(e^{x^2}\)
10 years ago
OpenStudy (trisarahtops):
ohhh right
10 years ago
hartnn (hartnn):
\(\implies (e^{x^2})^3 \times (x^2)' \\ \Large = e^{x^{2\times 3}}\times 2x\)
makes sense?
10 years ago
OpenStudy (trisarahtops):
yes
10 years ago
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OpenStudy (trisarahtops):
let me try to do that
10 years ago
OpenStudy (trisarahtops):
i got 2xe^(3x)^2
10 years ago
hartnn (hartnn):
laws of exponent
\(\Large (A^B)^C = A^{BC}\)
10 years ago
OpenStudy (trisarahtops):
oh wait no
10 years ago
OpenStudy (trisarahtops):
12e^x^6 x^6 + 2e^x^6
10 years ago
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hartnn (hartnn):
\(\implies (e^{x^2})^3 \times (x^2)' \\ \Large = e^{x^{2\times 3}}\times 2x\)
is just
\(\Large 2x{e^x}^6\)
10 years ago
hartnn (hartnn):
|dw:1462476602869:dw|
10 years ago