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AllQuestion and Answers: Page 142

Question Number 201209    Answers: 0   Comments: 4

Question Number 201200    Answers: 3   Comments: 2

Question Number 201192    Answers: 1   Comments: 0

Question Number 201190    Answers: 1   Comments: 0

Question Number 201185    Answers: 1   Comments: 0

Question Number 201172    Answers: 1   Comments: 0

Question Number 201166    Answers: 1   Comments: 0

Question Number 201162    Answers: 4   Comments: 0

Question Number 201152    Answers: 4   Comments: 0

if 4^x +4^(−x) =7 then 8^x +8^(−x) =?

if4x+4x=7then8x+8x=?

Question Number 201150    Answers: 2   Comments: 0

Question Number 201149    Answers: 1   Comments: 0

Question Number 201146    Answers: 1   Comments: 4

Question Number 201144    Answers: 2   Comments: 0

(((14)/(15)))^6 ×(((45)/(28)))^6 =

(1415)6×(4528)6=

Question Number 201140    Answers: 1   Comments: 0

If R_− =x^2 yi_− −2y^2 zj_− +xy^2 z^2 k_− , find ∣(d^2 R/dx^2 )×(d^2 R/dy^2 )∣ at the point (2,1,−2)

IfR=x2yi2y2zj+xy2z2k,findd2Rdx2×d2Rdy2atthepoint(2,1,2)

Question Number 201139    Answers: 1   Comments: 1

Question Number 201135    Answers: 1   Comments: 0

Question Number 201134    Answers: 0   Comments: 0

S : Area of AB^Δ C in AB^Δ C : (a^( 2) /(4S)) =^? (1/2) (cot(B)+cot(C)) (a^( 2) /(4S)) = (( a^( 2) )/(4 ((1/2) bc sin(A))))=((4R^2 sin^( 2) (A))/(8R^( 2) sin(B)sin(C)sin(A))) = ((sin (A ))/(2sin(B)sin(C))) =^(A+B+C=π) ((sin(B)cos(C)+cosBsin(C))/(2sin(B)sin(C))) = (1/2) (cot(B)+cot(C)) ■

S:AreaofABCΔinABCΔ:a24S=?12(cot(B)+cot(C))a24S=a24(12bcsin(A))=4R2sin2(A)8R2sin(B)sin(C)sin(A)=sin(A)2sin(B)sin(C)=A+B+C=πsin(B)cos(C)+cosBsin(C)2sin(B)sin(C)=12(cot(B)+cot(C))

Question Number 201133    Answers: 0   Comments: 1

Ω= ∫_1 ^( 3) (( 1)/( (√((x−1 )^3 )) + (√((x+1 )^3 )))) dx= ?

Ω=131(x1)3+(x+1)3dx=?

Question Number 201112    Answers: 1   Comments: 0

Question Number 201110    Answers: 1   Comments: 0

∫(1/( (√((x−a)^3 ))+(√((x+a)^3 ))))dx

1(xa)3+(x+a)3dx

Question Number 201108    Answers: 0   Comments: 6

Question Number 201106    Answers: 1   Comments: 0

calculate ... Σ_(n=1) ^∞ (( ζ(2n ))/(2^( n) .n)) = ?

calculate...n=1ζ(2n)2n.n=?

Question Number 201107    Answers: 0   Comments: 6

two weels, those have the same materials, with radii:r_1 =4 and r_2 =14 are starting to move on a surface,with the same velocity,from:x=0 to x=20. the surface has no friction. wich one arrives faster? any informations needed?

twoweels,thosehavethesamematerials,withradii:r1=4andr2=14arestartingtomoveonasurface,withthesamevelocity,from:x=0tox=20.thesurfacehasnofriction.wichonearrivesfaster?anyinformationsneeded?

Question Number 201091    Answers: 1   Comments: 2

Question Number 201184    Answers: 1   Comments: 0

Question Number 201081    Answers: 4   Comments: 0

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