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AllQuestion and Answers: Page 244

Question Number 191579 Answers: 2 Comments: 0

f(x)=∣x∣ f^(−1) (x)=? solution?

$f (x) =∣ x ∣$ $f^{- 1} (x) = ?$ $solution ?$

Question Number 191577 Answers: 0 Comments: 0

Give A′B′//AB, B′C′//BC and A′C′//AC Prove that: △ABC∽△A′B′C′

$G i v e A^{'} B^{'} / / A B, B^{'} C^{'} / / B C a n d A^{'} C^{'} / / A C$ $P r o v e t h a t : △ A B C ∽ △ A^{'} B^{'} C^{'}$

Question Number 191569 Answers: 0 Comments: 0

Question Number 191568 Answers: 0 Comments: 0

Σ_(n=1) ^∞ (((−1)^n (x+1)^n )/((n+1)ln(n+1)))

$\underset{n = 1}{\sum^{\infty}} \frac{{(- 1)}^{n} {(x + 1)}^{n}}{(n + 1) l n (n + 1)}$

Question Number 191567 Answers: 1 Comments: 0

Question Number 191555 Answers: 0 Comments: 1

Solve (√x) + y = 11 x + (√y) = 7

$Solve$ $\sqrt{x} + y = 11$ $x + \sqrt{y} = 7$

Question Number 191553 Answers: 4 Comments: 1

If a^2 + a + 1 = 0 then find a^5 + a^4 + 1.

$If a^{2} + a + 1 = 0 then find a^{5} + a^{4} + 1 .$

Question Number 191552 Answers: 2 Comments: 0

If x^2 − 3x + 1 = 0 then find the value of (x^2 + x + (1/x) + (1/x^2 ))^2

$If x^{2} - 3 x + 1 = 0 then find the value of$ ${(x^{2} + x + \frac{1}{x} + \frac{1}{x^{2}})}^{2}$

Question Number 191549 Answers: 0 Comments: 0

Question Number 191546 Answers: 1 Comments: 0

If m + 1 = (√n) + 3 then find the value of (1/2)(((m^3 − 6m^2 + 12m −8)/( (√n))) − n)

$If m + 1 = \sqrt{n} + 3 then find the value of$ $\frac{1}{2} (\frac{m^{3} - 6 m^{2} + 12 m - 8}{\sqrt{n}} - n)$

Question Number 191536 Answers: 2 Comments: 0

Factorize (2/(2x − 1)) −5 + (3/(3x − 1))

$Factorize$ $\frac{2}{2 x - 1} - 5 + \frac{3}{3 x - 1}$

Question Number 191530 Answers: 0 Comments: 3

Question Number 191529 Answers: 2 Comments: 0

If ((x − y)/(x(√y) + y(√x))) = (1/( (√x))) ; (x > 0 and y > 0) then Find the value of (x/y) .

$If \frac{x - y}{x \sqrt{y} + y \sqrt{x}} = \frac{1}{\sqrt{x}}; (x > 0 and y > 0) then$ $Find the value of \frac{x}{y} .$

Question Number 191528 Answers: 1 Comments: 0

find the value of the following series . Ω= Σ_(n=1) ^∞ (( cos(((nπ)/4) ))/n^( 2) ) =?

$f i n d t h e v a l u e o f t h e$ $f o l l o w i n g s e r i e s .$ $Ω = \underset{n = 1}{\sum^{\infty}} \frac{c o s (\frac{n π}{4})}{n^{2}} = ?$

Question Number 191527 Answers: 2 Comments: 0

x + y = 1 and x^2 + y^2 = 2. Find the value of x^(11) + y^(11) .

$x + y = 1 and x^{2} + y^{2} = 2 . Find the value$ $of x^{11} + y^{11} .$

Question Number 191525 Answers: 1 Comments: 0

Q : Show that the numbers (√(3 )) , 2 & (√8) cannot be terms of an arithmetic sequence.

$Q : S h o w t h a t t h e n u m b e r s \sqrt{3}, 2 & \sqrt{8} c a n n o t b e t e r m s o f a n a r i t h m e t i c s e q u e n c e .$

Question Number 191519 Answers: 1 Comments: 0

∫_0 ^( (π/2)) (dx/(1+ sin x))

$\int_{0}^{\frac{π}{2}} \frac{d x}{1 + \sin x}$

Question Number 191518 Answers: 0 Comments: 1

Question Number 191602 Answers: 1 Comments: 1

Question Number 191597 Answers: 0 Comments: 0

Prove H_x → cot ( x ) x!→ sin ( x )

$P r o v e$ $H_{x} \to \cot (x)$ $x! \to \sin (x)$

Question Number 191595 Answers: 1 Comments: 0

a = ((xy)/(x + y)) , b = ((xz)/(x + z)) and c = ((yz)/(y + z)) . Represent x in a, b, c form. [x, y, z ≠ 0]

$a = \frac{x y}{x + y}, b = \frac{x z}{x + z} and c = \frac{y z}{y + z} .$ $Represent x in a, b, c form . [x, y, z \neq 0]$

Question Number 191611 Answers: 1 Comments: 0

if x^2 −x+1 = 0 and α and β are thd roots of this equation then evaluate ((α^(100) +β^(100) )/(α^(100) −β^(100) ))

$i f x^{2} - x + 1 = 0 a n d α a n d β a r e t h d r o o t s$ $o f t h i s e q u a t i o n t h e n e v a l u a t e \frac{α^{100} + β^{100}}{α^{100} - β^{100}}$

Question Number 191512 Answers: 1 Comments: 0

Q: the equation ⌊ cos(4x )⌋=m.cos(2x) has no solution . x∈ (0, (π/2) ) find the acceptable real values for ”m”.

$Q : t h e e q u a t i o n$ $⌊ \cos (4 x) ⌋ = m . \cos (2 x)$ $h a s n o s o l u t i o n . x \in (0, \frac{π}{2})$ $f i n d t h e a c c e p t a b l e$ $r e a l v a l u e s f o r^{″} m^{″} .$

Question Number 191510 Answers: 0 Comments: 3

now I can write in arabic language but I cant use it to wrie equations for example ax^2 + bx + c = 0 + + = W G

$n o w I c a n w r i t e i n a r a b i c$ $l a n g u a g e b u t I c a n t u s e$ $i t t o w r i e e q u a t i o n s$ $f o r e x a m p l e$ ${a x}^{2} + b x + c = 0$ $+ + = \underset{―}{W}$ $\underset{―}{G} \underset{―}{\underset{⏟}{}}$

Question Number 191508 Answers: 0 Comments: 0

Question Number 191507 Answers: 1 Comments: 0

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