Question and Answers Forum

All Questions Topic List

AllQuestion and Answers: Page 1908

Question Number 11040 Answers: 0 Comments: 0

Question Number 11036 Answers: 2 Comments: 1

li_(n→∼) m Σ_(k=1) ^n ((8n^2 )/(n^4 +1)) =....?

$l \underset{n \to\sim}{i m} \underset{k = 1}{\sum^{n}} \frac{8 n^{2}}{n^{4} + 1} = . . . . ?$

Question Number 11035 Answers: 1 Comments: 0

A= [(1,(−1)),((−4),(−2)) ] A^(2016) =.....?

$A = [\begin{matrix} 1 & - 1 \\ - 4 & - 2 \end{matrix}]$ $A^{2016} = . . . . . ?$

Question Number 11034 Answers: 0 Comments: 1

u= [(1,(−1),2) ] A= [(3,2),(1,3),(0,1) ] v= [(2,(−1)) ] uAv^t =....?

$u = [\begin{matrix} 1 & - 1 & 2 \end{matrix}]$ $A = [\begin{matrix} 3 & 2 \\ 1 & 3 \\ 0 & 1 \end{matrix}]$ $v = [\begin{matrix} 2 & - 1 \end{matrix}]$ ${u A v}^{t} = . . . . ?$

Question Number 11214 Answers: 1 Comments: 0

Question Number 11212 Answers: 1 Comments: 0

Question Number 11217 Answers: 0 Comments: 0

∃e_i :i∈N e_i is a basis vector A∈C^n A=Σ_(i∈N) e_i A_i = ((A_1 ),(A_2 ),(⋮),(A_n ) ) = ∣A⟩ ⟨B∣=(∣B^∗ ⟩)^T ∣A⟩⟨B∣=???

$\exists e_{i} : i \in N e_{i} is a basis vector$ $A \in C^{n}$ $A = \sum_{i \in N} e_{i} A_{i} = (\begin{matrix} A_{1} \\ A_{2} \\ ⋮ \\ A_{n} \end{matrix}) = ∣ A ⟩$ $⟨ B ∣= {(∣ B^{*} ⟩)}^{T}$ $∣ A ⟩ ⟨ B ∣= ? ? ?$

Question Number 11215 Answers: 0 Comments: 0

Question Number 11024 Answers: 1 Comments: 0

P(x+1)×P(x−1)=4x^2 +8x+a−5 a=?

$P (x + 1) \times P (x - 1) = 4 x^{2} + 8 x + a - 5$ $a = ?$

Question Number 11023 Answers: 1 Comments: 0

(x^3 +6)×P(x)+6x=ax^3 +2ax+b+3 ⇒b=?

$(x^{3} + 6) \times P (x) + 6 x = {a x}^{3} + 2 a x + b + 3$ $\Rightarrow b = ?$

Question Number 11019 Answers: 2 Comments: 0

Question Number 11020 Answers: 2 Comments: 0

Question Number 11013 Answers: 0 Comments: 0

Euler vs. Newton

$Euler vs . Newton$

Question Number 11011 Answers: 2 Comments: 0

if tan(xy)=x then (dy/dx)=

$i f t a n (x y) = x t h e n \frac{d y}{d x} =$

Question Number 11009 Answers: 1 Comments: 0

If x^3 = y^3 Is it always true that x = y ?

$If x^{3} = y^{3}$ $Is it always true that x = y ?$

Question Number 11005 Answers: 1 Comments: 0

prove that (9/4) < (log _2 3)^2 < ((25)/9) .

$p r o v e t h a t \frac{9}{4} < {(\log_{2} 3)}^{2} < \frac{25}{9} .$

Question Number 10995 Answers: 1 Comments: 1

Prove that 3>(log_2 3)^2 >2.

$Prove that 3 > {(\log_{2} 3)}^{2} > 2 .$

Question Number 10994 Answers: 0 Comments: 3

Γ(2407) = (2406)! = ∫_0 ^∞ e^(−x) x^(2406) dx How evaluate ∫e^(−x) x^(2406) dx ???

$Γ (2407) = (2406)! = \int_{0}^{\infty} e^{- x} x^{2406} dx$ $How evaluate \int e^{- x} x^{2406} dx ? ? ?$

Question Number 10989 Answers: 1 Comments: 0

find the image of the point(5,2) under a rotation of 90° clockwise

$f i n d t h e i m a g e o f t h e p o i n t (5, 2)$ $u n d e r a r o t a t i o n o f 90 ° c l o c k w i s e$

Question Number 10987 Answers: 1 Comments: 0

If • f(2x + 1) + g(3 − x) = x • f(((3x + 5)/( x + 1))) + 2g(((2x + 1)/(x + 1))) = (x/(x + 1)) for every x ∈ R, x ≠ −1 Find f(x) !!

$If$ $∙ f (2 x + 1) + g (3 - x) = x$ $∙ f (\frac{3 x + 5}{x + 1}) + 2 g (\frac{2 x + 1}{x + 1}) = \frac{x}{x + 1}$ $for every x \in R, x \neq - 1$ $Find f (x)!!$

Question Number 10981 Answers: 1 Comments: 1

Question Number 10970 Answers: 1 Comments: 0

x^x^x^⋰^2 = 2 What is the value of x ?

$x^{x^{x^{\iddots^{2}}}} = 2$ $What is the value of x ?$

Question Number 10973 Answers: 3 Comments: 1

∣∣x∣+2x∣≤3, interval x=...? A.−3≤x≤3 B. x≥0 C. x≤0 D. −1≤x≤1 E. x≤2

$∣∣ x ∣ + 2 x ∣⩽ 3, interval x = . . . ?$ $A . - 3 ⩽ x ⩽ 3$ $B . x ⩾ 0$ $C . x ⩽ 0$ $D . - 1 ⩽ x ⩽ 1$ $E . x ⩽ 2$

Question Number 10956 Answers: 0 Comments: 4

y = ((x − 2)/(2(x − 1)^(3/2) )) Let p = x − 1 ⇒ y = ((p − 1)/(2p^(3/2) )) Is it true that (dy/dx) = (dy/dp) ?

$y = \frac{x - 2}{2 {(x - 1)}^{3 / 2}}$ $Let p = x - 1$ $\Rightarrow y = \frac{p - 1}{2 p^{3 / 2}}$ $Is it true that \frac{d y}{d x} = \frac{d y}{d p} ?$

Question Number 10955 Answers: 2 Comments: 0

If ((cos θ)/(1 − sin θ)) = a a ≠ (π/2) + 2kπ So, tan (θ/2) = ... (A) (a/(a + 1)) (D) ((a + 1)/(a − 1)) (B) (1/(a + 1)) (E) (a/(a − 1)) (C) ((a − 1)/(a + 1))

$If \frac{\cos θ}{1 - \sin θ} = a a \neq \frac{π}{2} + 2 k π$ $So, \tan \frac{θ}{2} = . . .$ $(A) \frac{a}{a + 1} (D) \frac{a + 1}{a - 1}$ $(B) \frac{1}{a + 1} (E) \frac{a}{a - 1}$ $(C) \frac{a - 1}{a + 1}$

Question Number 10948 Answers: 1 Comments: 0

If cos^(−1) (x/a)+cos^(−1) (y/b)=α prove (x^2 /a^2 )−((2xy)/(ab))cos α+(y^2 /b^2 )=sin^2 α

$If \cos^{- 1} \frac{x}{a} + \cos^{- 1} \frac{y}{b} = α$ $p r o v e$ $\frac{x^{2}}{a^{2}} - \frac{2 x y}{a b} \cos α + \frac{y^{2}}{b^{2}} = \sin^{2} α$

Pg 1903 Pg 1904 Pg 1905 Pg 1906 Pg 1907 Pg 1908 Pg 1909 Pg 1910 Pg 1911 Pg 1912

Contact: info@tinkutara.com