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Question Number 194446 Answers: 0 Comments: 0

Question Number 191731 Answers: 1 Comments: 0

Use laws of algebra to prove the following (a)[(B−A)u(A−B)]=[(AuB)−(AnB)] (b)A▽(AnB)=A−B

$Use laws of algebra to prove the following$ $(a) [(B - A) u (A - B)] = [(AuB) - (AnB)]$ $(b) A ▽ (AnB) = A - B$

Question Number 191501 Answers: 1 Comments: 2

find a solution; e^x = ln(x)

$f i n d a s o l u t i o n;$ $e^{x} = l n (x)$

Question Number 190573 Answers: 1 Comments: 3

a^ 2+2ab+b^ 2

$\hat{a} 2 + 2 a b + \hat{b} 2$

Question Number 189672 Answers: 0 Comments: 2

Question Number 189091 Answers: 1 Comments: 0

1 : Ω = Σ_(n=1) ^∞ (( (− 1 )^( n) H_( n) )/n^( 2) ) = ? 2 : η (−1 )= ?

$1 : Ω = \underset{n = 1}{\sum^{\infty}} \frac{{(- 1)}^{n} H_{n}}{n^{2}} = ?$ $2 : η (- 1) = ?$

Question Number 185890 Answers: 1 Comments: 0

Q: G( V , E ) is a graph , such that ∣ V (G )∣ = 20 , Δ ( G )= 8 , δ (G )=3 find the value of , q_( max) − q_( min) = ? q = ∣ E (G )∣

$Q : G (V, E) i s a g r a p h, s u c h t h a t$ $∣ V (G) ∣ = 20, Δ (G) = 8, δ (G) = 3$ $f i n d t h e v a l u e o f, q_{m a x} - q_{m i n} = ?$ $q = ∣ E (G) ∣$

Question Number 182718 Answers: 2 Comments: 4

If , 7^( n) ≡^(10) 7^( 19) then find the 1st digit of the numer , 8^( n+4) .

$If, 7^{n} \overset{10}{\equiv} 7^{19}$ $t h e n f i n d t h e 1 s t d i g i t$ $o f t h e n u m e r, 8^{n + 4} .$

Question Number 182203 Answers: 0 Comments: 0

Let A={1^(p^2 −p) , 2^(p^2 −p) ,..., (p−1)^(p^2 −p) , p^2 −p+1} where p is any prime number Prove that for any value of p, however we split this set into two disjunctive sets, the arithmetic means of all elements of both sets cannot be equal to each other.

$L e t A = {1^{p^{2} - p}, 2^{p^{2} - p}, . . ., {(p - 1)}^{p^{2} - p}, p^{2} - p + 1}$ $w h e r e p i s a n y p r i m e n u m b e r$ $P r o v e t h a t f o r a n y v a l u e o f p,$ $h o w e v e r w e s p l i t t h i s s e t i n t o t w o$ $d i s j u n c t i v e s e t s, t h e a r i t h m e t i c$ $m e a n s o f a l l e l e m e n t s o f b o t h s e t s$ $c a n n o t b e e q u a l t o e a c h o t h e r .$

Question Number 182129 Answers: 0 Comments: 0

Question Number 181280 Answers: 1 Comments: 0

Question Number 180299 Answers: 1 Comments: 0

Question Number 179919 Answers: 1 Comments: 0

Evaluate Ω = lim_( n→∞) ( n− Σ_(k=1) ^n cos ( (( (√k))/( n)) ) ) =?

$Evaluate$ $Ω = \lim_{n \to \infty} (n - \underset{k = 1}{\sum^{n}} \cos (\frac{\sqrt{k}}{n})) = ?$

Question Number 179918 Answers: 1 Comments: 0

Question Number 175800 Answers: 1 Comments: 0

Find prime numbers of 3 digits such that equal to sum of 3 diffrent numbers of prime

$Find prime numbers of$ $3 digits such that equal to$ $sum of 3 diffrent numbers of$ $prime$

Question Number 175353 Answers: 1 Comments: 0

ax^2 +bx+c = 0 x = ((−b±(√(b^2 −4ac)))/(2a)) Example: Find the values of x in the equation x^2 +5x+4 = 0 In order to solve for that, let′s first take a look on what are the values of a, b and c 1x^2 + 5x + 4 = 0 a = 1 ; b = 5 ; c = 4 Now, using the quadratic formula x = ((−5±(√(5^2 −4(1)(4))))/(2(1))) = ((−5±(√(25−16)))/2) = ((−5±3)/2)

${ax}^{2} + bx + c = 0$ $x = \frac{- b \pm \sqrt{b^{2} - 4 ac}}{2 a}$ $Example :$ $Find the values of x in the equation$ $x^{2} + 5 x + 4 = 0$ $In order to solve for that, {let}^{'} s first take$ $a look on what are the values of a, b and c$ ${1 x}^{2} + 5 x + 4 = 0$ $a = 1; b = 5; c = 4$ $Now, using the quadratic formula$ $x = \frac{- 5 \pm \sqrt{5^{2} - 4 (1) (4)}}{2 (1)}$ $= \frac{- 5 \pm \sqrt{25 - 16}}{2}$ $= \frac{- 5 \pm 3}{2}$