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Mathematics
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OpenStudy (anonymous):
Calculate fog and gof : f(x)=e^x^2
g(x)=e^-x^2
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OpenStudy (helder_edwin):
it is
\[\large f(x)=e^{x^2} \]
and
\[\large g(x)=e^{-x^2} \]
right?
OpenStudy (helder_edwin):
just use the definition
\[\large (f\circ g)(x)=f(g(x)). \]
OpenStudy (anonymous):
??????????
OpenStudy (ikram002p):
wat r u stuck in ??
OpenStudy (anonymous):
؟
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OpenStudy (helder_edwin):
in the first case, the idea is to replace g(x) in every x of f(x)
OpenStudy (ikram002p):
i mean which step you dont understand ??
OpenStudy (anonymous):
ok
OpenStudy (anonymous):
the finale step
OpenStudy (ikram002p):
fog =f(g(x)) ??
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OpenStudy (anonymous):
fog(x)=e^e^(-x^2)^2 ??
OpenStudy (ikram002p):
would u like me to explain it to u in arabic ?? " i suppose u know arabic right ??"
OpenStudy (anonymous):
نعممممممممممممممممممممم
OpenStudy (ikram002p):
fog
معناها
f
بعد
g
يعني لازم تشوف بالأول الاقتران
g
وتطبقو على
f
حتى الآن جيد ؟؟
OpenStudy (anonymous):
اوك
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OpenStudy (ikram002p):
طيب
g(x)=e^(-x)^2=e^(-2x)
ماشي ؟؟
OpenStudy (anonymous):
ماشي
OpenStudy (ikram002p):
اوك هسا بدك تشوف
f(g(x))
عوض بدل
g(x)
القيمة اللي طلعت عندك يعني بدك تشوف
f(e^(-2x))
OpenStudy (anonymous):
اكتبي كل الاجابات بليز
OpenStudy (ikram002p):
اوكي ما انا بعمل خطوة بخطوة
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OpenStudy (ikram002p):
لحد هون فاهم ؟؟
OpenStudy (ikram002p):
f(x)=e^x^2 =e^(2x)
بس انك بدك توجد
fog=f(g(x))
يعني مكان كل
x
بالاقتران عوض
g(x)
f(g(x))=e^(2g(x))
=e^(2(e^(-2x)))
=e^(-4xe)=-4x
OpenStudy (ikram002p):
|dw:1384016602008:dw|
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