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Question Number 194174 Answers: 1 Comments: 0

Know f(x^(−1) )=f^(−1) (x) (f^(−1) (x)=(1/(f(x)))) Find f(x)¿

$K n o w f (x^{- 1}) = f^{- 1} (x) (f^{- 1} (x) = \frac{1}{f (x)})$ $F i n d f (x) ¿$

Question Number 194166 Answers: 1 Comments: 0

Question Number 194172 Answers: 2 Comments: 1

Question Number 194165 Answers: 1 Comments: 0

Question Number 194163 Answers: 0 Comments: 0

Let a , b , c be positive real numbers prove that (a/b)+(b/c)+(c/a)+((3^3 (√(abc)))/(a+b+c))≥4

$L e t a, b, c b e p o s i t i v e r e a l n u m b e r s$ $p r o v e t h a t$ $\frac{a}{b} + \frac{b}{c} + \frac{c}{a} + \frac{3^{3} \sqrt{a b c}}{a + b + c} ⩾ 4$

Question Number 194159 Answers: 0 Comments: 0

...anybody tried question 193484? It′s not as hard as it may seem.

$. . . anybody tried question 193484 ?$ ${It}^{'} s not as hard as it may seem .$

Question Number 194158 Answers: 1 Comments: 0

Find all possible solutions: (1/s)+(1/t)+(1/u)+(1/v)=1 With s, t, u, v ∈N and s<t<u<v

$Find all possible solutions :$ $\frac{1}{s} + \frac{1}{t} + \frac{1}{u} + \frac{1}{v} = 1$ $With s, t, u, v \in N and s < t < u < v$

Question Number 194147 Answers: 2 Comments: 0

lim_(n→+∞) ((1/1^2 )+(1/2^2 )+(1/3^2 )+...+(1/n^2 ))=?

$\lim_{n \to + \infty} (\frac{1}{1^{2}} + \frac{1}{2^{2}} + \frac{1}{3^{2}} + . . . + \frac{1}{n^{2}}) = ?$

Question Number 194144 Answers: 5 Comments: 0

fill with different natural numbers: (1/(19))=(1/(( )))+(1/(( )))+(1/(( )))+(1/(( )))

$f i l l w i t h d i f f e r e n t n a t u r a l n u m b e r s :$ $\frac{1}{19} = \frac{1}{()} + \frac{1}{()} + \frac{1}{()} + \frac{1}{()}$

Question Number 194143 Answers: 0 Comments: 1

Question Number 194140 Answers: 1 Comments: 0

prove it : ((n),(k) )^( 2) ≥ ((( n)),((k−1)) ) × ((( n)),((k+1)) ) ; 1≤k≤n−1

$p r o v e i t :$ ${(\begin{matrix} n \\ k \end{matrix})}^{2} ⩾ (\begin{matrix} n \\ k - 1 \end{matrix}) \times (\begin{matrix} n \\ k + 1 \end{matrix}); 1 ⩽ k ⩽ n - 1$

Question Number 194139 Answers: 1 Comments: 1

Question Number 194135 Answers: 3 Comments: 0

determinant (((((23!−23)/(1.1!+2.2!+3.3!+...+21.21!)) =?)))

$\begin{matrix} \frac{23! - 23}{1.1! + 2.2! + 3.3! + . . . + 21.21!} = ? \end{matrix}$

Question Number 194131 Answers: 1 Comments: 1

Question Number 194128 Answers: 1 Comments: 0

Question Number 194127 Answers: 2 Comments: 0

Question Number 194116 Answers: 1 Comments: 0

Question Number 194113 Answers: 1 Comments: 0

Question Number 194105 Answers: 1 Comments: 0

x , y , z are positive real numbers if x^4 +y^4 +z^4 =1 Then find the minimum value of (x^3 /(1−x^8 ))+(y^3 /(1−y^8 ))+(z^3 /(1−z^8 ))

$x, y, z a r e p o s i t i v e r e a l n u m b e r s i f x^{4} + y^{4} + z^{4} = 1$ $T h e n f i n d t h e m i n i m u m v a l u e o f$ $\frac{x^{3}}{1 - x^{8}} + \frac{y^{3}}{1 - y^{8}} + \frac{z^{3}}{1 - z^{8}}$

Question Number 194089 Answers: 1 Comments: 3

Determiner le rayon r

$Determiner le rayon r$

Question Number 194088 Answers: 3 Comments: 0

Question Number 194086 Answers: 1 Comments: 1

f(x)=2y^2 +4y+3 then a_(0 ) equle to a) p(5) b) 7 c) 3 d) not defined

$f (x) = 2 y^{2} + 4 y + 3 t h e n a_{0} e q u l e t o$ $a) p (5) b) 7$ $c) 3 d) n o t d e f i n e d$

Question Number 194085 Answers: 2 Comments: 0

f(x)−f(x−1)=x+1 f′(6)=? solution??

$f (x) - f (x - 1) = x + 1$ $f^{'} (6) = ?$ $solution ? ?$

Question Number 194073 Answers: 2 Comments: 0

Question Number 194067 Answers: 2 Comments: 0

Question Number 194065 Answers: 0 Comments: 0

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