Multivariable-calculus, logarithms I got the function f(x,y)=ln(1+x^2+y^2). There are three tasks to answer. a)Decide the function´s stationary points and classify them if possible. Here I got the answer to (0,0) is a local maximum point. b)Decide a Here I got the answer (0,0) c)Now limit the domain of definition to x^2+y^2<=1. Decide the function´s biggest and lowest value and the range. Please help me with task c). The answer should be: lowest value: f(0,0)=0. Biggest value: f(a,b)=ln(2) for all a^2+b^2=1. The range is 0<=z<=ln(2). How do I get there?

$\frac{20b}{{\left(4b^3\right)}^3}$

Which operation could we perform in order to find the number of milliseconds in a year??
${\displaystyle 60\cdot 60\cdot 24\cdot 7\cdot 365}$
${\displaystyle 1000\cdot 60\cdot 60\cdot 24\cdot 365}$
${\displaystyle 24\cdot 60\cdot 100\cdot 7\cdot 52}$
${\displaystyle 1000\cdot 60\cdot 24\cdot 7\cdot 52?}$

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A) No
B) 0
C) Yes
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149600000000 is equal to
A)$1.496\times <!--\; \times \; -->{10}^{11}$
B)$1.496\times <!--\; \times \; -->{10}^{10}$
C)$1.496\times <!--\; \times \; -->{10}^{12}$
D)$1.496\times <!--\; \times \; -->{10}^8$

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