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Question Number 152826 Answers: 1 Comments: 0

An electric current passes through two voltmeters in series containing copper sulphate (CuSO₄) and silver nitrate (AgNO₃) respectively. What is the mass of silver deposited in a given time, if the mass of copper deposited in that time is 1g. (Cu = 63 , Ag = 108 valency of Cu is 2 and valency of Ag is 1).

An electric current passes through two voltmeters in series containing copper sulphate (CuSO₄) and silver nitrate (AgNO₃) respectively. What is the mass of silver deposited in a given time, if the mass of copper deposited in that time is 1g. (Cu = 63 , Ag = 108 valency of Cu is 2 and valency of Ag is 1).

Question Number 152817 Answers: 4 Comments: 0

Find the coefficient of 1.x^(20 ) in (1−x+x^2 )^(20) 2.x^4 in (1+x+x^2 +x^3 )_ ^(11) please,help me

$F i n d t h e c o e f f i c i e n t o f$ $1 . x^{20} i n {(1 - x + x^{2})}^{20}$ $2 . x^{4} i n {(1 + x + x^{2} + x^{3})}_{}^{11}$ $p l e a s e, h e l p m e$

Question Number 152805 Answers: 2 Comments: 0

Question Number 152801 Answers: 0 Comments: 3

resouds ∣1−x∣y′+xy=x

$r e s o u d s$ $∣ 1 - x ∣ y^{'} + x y = x$

Question Number 152799 Answers: 1 Comments: 1

Given that f○g = (x^2 /(2x^2 − x + 4)) and g(x) = (x/(x − 2)), find f(x).

$Given that f \circ g = \frac{x^{2}}{2 x^{2} - x + 4} and$ $g (x) = \frac{x}{x - 2}, find f (x) .$

Question Number 152795 Answers: 1 Comments: 0

𝛗=∫_0 ^( ∞) ((sin(x ))/x)(((a^( 2) +cos^( 2) (x))/(b^( 2) + cos^( 2) (x ))))dx=?

$ϕ = \int_{0}^{\infty} \frac{s i n (x)}{x} (\frac{a^{2} + {c o s}^{2} (x)}{b^{2} + {c o s}^{2} (x)}) d x = ?$

Question Number 152779 Answers: 0 Comments: 4

Question Number 152778 Answers: 0 Comments: 0

Solve .......... Ω := ∫_0 ^( 1) x. sin( ln (x ))dx =^? ((−1)/( 5)) solution.... Ω :=^(i.b.p) [ (x^( 2) /2) . sin(ln(x))]_0 ^( 1) −(1/2)∫_0 ^( 1) x.cos( ln (x ))dx := ((−1)/2) ∫_0 ^( 1) x. cos (ln (x ))dx :=^(i.b.p) ((−1)/2) {[ (x^( 2) /2) cos (ln(x ))]_0 ^1 +(1/2) ∫x. sin(ln(x ))dx} := ((−1)/4) −(1/4) Ω (5/4) Ω = ((−1)/4) ⇒ Ω := ((−1)/( 5)) .........■ m.n .................................

$Solve . . . . . . . . . .$ $Ω := \int_{0}^{1} x . s i n (l n (x)) d x \overset{?}{=} \frac{- 1}{5}$ $solution . . . .$ $Ω : \overset{i . b . p}{=} {[\frac{x^{2}}{2} . s i n (l n (x))]}_{0}^{1} - \frac{1}{2} \int_{0}^{1} x . c o s (l n (x)) d x$ $:= \frac{- 1}{2} \int_{0}^{1} x . c o s (l n (x)) d x$ $: \overset{i . b . p}{=} \frac{- 1}{2} {{[\frac{x^{2}}{2} c o s (l n (x))]}_{0}^{1} + \frac{1}{2} \int x . s i n (l n (x)) d x}$ $:= \frac{- 1}{4} - \frac{1}{4} Ω$ $\frac{5}{4} Ω = \frac{- 1}{4} \Rightarrow Ω := \frac{- 1}{5} . . . . . . . . . ◼ m . n$ $. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .$

Question Number 152772 Answers: 1 Comments: 2

if ((((x−2))^(1/3) +2))^(1/3) + ((2−((x−2))^(1/3) ))^(1/3) =2 then find the value of (√(198x^4 −868x^3 −229x^2 +200x))

$i f \sqrt[3]{\sqrt[3]{x - 2} + 2} + \sqrt[3]{2 - \sqrt[3]{x - 2}} = 2$ $then find the value of$ $\sqrt{198 x^{4} - 868 x^{3} - 229 x^{2} + 200 x}$

Question Number 152771 Answers: 0 Comments: 2

If f(z) = z sin(z) + ∣z∣^2 , verify if f(z) satisfy cauchy rieman condition

$If f (z) = z \sin (z) + ∣ z ∣^{2}, verify if f (z) satisfy cauchy rieman$ $condition$

Question Number 152770 Answers: 0 Comments: 1

How to prove that a<b<c ⇒ a+b > c which a,b,c are sides of a triangle ?

$H o w t o p r o v e t h a t$ $a < b < c \Rightarrow a + b > c$ $w h i c h a, b, c a r e s i d e s o f a t r i a n g l e ?$

Question Number 152769 Answers: 1 Comments: 1

Question Number 152768 Answers: 0 Comments: 0

lim_(x→∞) (((5x+1)/(−5x+2)))^(1+2x) =?

$\lim_{x \to \infty} {(\frac{5 x + 1}{- 5 x + 2})}^{1 + 2 x} = ?$

Question Number 152764 Answers: 3 Comments: 2

Question Number 152761 Answers: 0 Comments: 0

prove that: S := Σ_(n=1) ^∞ ((( 1)/(sinh (2^( n) .x)))) =^? (( 2)/(e^( 2x) −1)) m.n...

$p r o v e t h a t :$ $S := \underset{n = 1}{\sum^{\infty}} (\frac{1}{s i n h (2^{n} . x)}) \overset{?}{=} \frac{2}{e^{2 x} - 1}$ $m . n . . .$

Question Number 152757 Answers: 1 Comments: 0

Find all complex number z such that (3z+1)(4z+1)(6z+1)(12z+1)=2

$F i n d a l l c o m p l e x n u m b e r z s u c h$ $t h a t (3 z + 1) (4 z + 1) (6 z + 1) (12 z + 1) = 2$

Question Number 152793 Answers: 0 Comments: 2

∫!dx i found this question somewhere and i dont know even know how to approach it.

$\int! d x$ $i f o u n d t h i s q u e s t i o n s o m e w h e r e$ $a n d i d o n t k n o w e v e n k n o w h o w t o$ $a p p r o a c h i t .$

Question Number 152753 Answers: 2 Comments: 12

Determine all triplets (a;b;c) of positive integers which satisfy: (1/a) + (1/b) + (1/c) = (1/2)

$Determine all triplets (a; b; c) of positive$ $integers which satisfy :$ $\frac{1}{a} + \frac{1}{b} + \frac{1}{c} = \frac{1}{2}$

Question Number 152752 Answers: 0 Comments: 2

Given ((((x−2))^(1/3) +2))^(1/3) +((2−((x+2))^(1/3) ))^(1/3) =2 then (√(198x^4 −868x^3 −229x^2 +200x)) =?

$G i v e n \sqrt[3]{\sqrt[3]{x - 2} + 2} + \sqrt[3]{2 - \sqrt[3]{x + 2}} = 2$ $t h e n \sqrt{198 x^{4} - 868 x^{3} - 229 x^{2} + 200 x} = ?$

Question Number 152751 Answers: 0 Comments: 0

∫_0 ^( ∞) (((cos(2cos(x)+1)+1)^(3/2) )/((ln((√(x^4 +1))−x))^4 )) dx

$\int_{0}^{\infty} \frac{{(\cos (2 \cos (x) + 1) + 1)}^{\frac{3}{2}}}{{(\ln (\sqrt{x^{4} + 1} - x))}^{4}} d x$

Question Number 152748 Answers: 1 Comments: 0

Question Number 152730 Answers: 1 Comments: 0

∫_0 ^(π/3) ((tanx)/( (√(2cosx−1))))dx

$\int_{0}^{\frac{π}{3}} \frac{t a n x}{\sqrt{2 c o s x - 1}} d x$

Question Number 152723 Answers: 1 Comments: 0

Question Number 152722 Answers: 1 Comments: 0

Question Number 152721 Answers: 0 Comments: 2

Question Number 152788 Answers: 0 Comments: 0

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