5x-y-4z=3
-x+6y-3z=2
-4x-3y+11z=2
280x+80y=40
80x+100y+20z=400
20x+90z=440
16−116^{-1}16−1
16−116{-1}16−1
17x+5y+12z=24
5x+54y-8z=0
12x-8y+44z=0
f(x,y)=
⎩
⎨
⎧
3sin(
x−4
y
)+4xy
a
si x>4
si x≤4
. lım x→0
sin(x)
x
+xsin 1
Let us assume that from a population with mean μ=100 and standard deviation σ=15 a sample random variable of n=900 is selected.
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