tan(2x) =
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81%
2 tan(x)/ 1-tan^2(x)
8%
tan(x)/ 1-tan^2(x)
4%
tan(x)/ 2-tan^2(x)
7%
2 tan(x)/ 1+tan^2(x)
to have a reverse function we need to sure that
Anonymous Quiz
27%
the function is one to one
7%
Df = Rg AND Dg = Rf [we suppose that f,g are reversed functions]
65%
A&B
1%
None of these
ازاي تجيب الدالة العكسية بعد ماتتاكد انها one to one
مثلا
f(x) = x + 1 // f(x) = y
y = x + 1 // x فطرف لوحدها
x = y - 1 // بدل الرموز الاكس والواي
يبقى الدالة العكسية f(x) = x -1
مثلا
f(x) = x + 1 // f(x) = y
y = x + 1 // x فطرف لوحدها
x = y - 1 // بدل الرموز الاكس والواي
يبقى الدالة العكسية f(x) = x -1
log(a) x1x2 =
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83%
log(a) x1 + log(a) x2
13%
log(a) x1 * log(a) x2
4%
log(a) x1 / log(a) x2
0%
log(a) x1 - log(a) x2
log(a) x1/x2 =
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2%
log(a) x1 + log(a) x2
4%
log(a) x1 * log(a) x2
91%
log(a) x1 - log(a) x2
3%
log(a) x1 / log(a) x2