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# Pinkgreen

Réponses préférées14%
Réponses9 547
Questions41
• ### If f(x)=ln|(1-x)e^(-3x)|, please find f '(2)=?

4 réponsesMathematicsIl y a 3 mois
• ### Please find the general term of the sequence: 11,20,42,101,245,570,.... Thank for your help.?

3 réponsesMathematicsIl y a 4 mois
• ### Find the perimeter of the ellipse: (x/3)^2+(y/2)^2=1.?

MathematicsIl y a 10 mois
• ### It is a correction for the answer to the normal component in "Find the tangential & the normal component of..."?

Correction: it should be that c=|r'xr"|/|r'^3|=>c=6t^2/[t^3(4+9t^2)^1.5]=>c=6/[t(4+9t^2)^1.5]. Thus, cv^2=6(4+9t^2)t/(4+9t^2)^1.5=>cv^2=6t/sqr(4+9t^2)=

the normal component. Sorry.

MathematicsIl y a 11 mois

4 réponsesMathematicsIl y a 2 années

1 réponseMathematicsIl y a 2 années
• ### Solve for all x: x^6-2x^5+3x^4+x^3+7x^2+x+20=0 Please "2898-551-526" help.?

3 réponsesMathematicsIl y a 3 années
• ### 2x0x1 is a five-digit number, what is x such that the number is divisible by 7? Please help.?

3 réponsesMathematicsIl y a 4 années
• ### Help please, find the domain of f(x, y)= sqrt( |x|+|y|-3 ). Thanks?

4 réponsesMathematicsIl y a 4 années
• ### Find the domain of f(x,y)=sqrt(|x|+|y|-3), Help please show work. Thanks.?

3 réponsesMathematicsIl y a 4 années
• ### Help, Math-Pa, how to solve |2x-1|+3|x+1|>5?

4 réponsesMathematicsIl y a 5 années
• ### Find the 7th term of the sequence of 10, 23, 60, 169, 494,.... Please help.?

10 réponsesMathematicsIl y a 5 années
• ### Solve for x, 1.5x-(e^x)cosx=0, accurate to 2 d.ps. Hint: to expand (e^x)cosx or use other mean. Thanks in advance.?

3 réponsesTriviaIl y a 6 années
• ### x=2+sqrt(3)-i is a root of x^2+2ix-4[2+sqrt(3)]=0, what is the other root, what is the characteristic of them can be found?

2 réponsesMathematicsIl y a 6 années
• ### Please solve for all roots of p(x)=0, where p(x)=x^6+2x^5-2x^4-8x^3-4x^2+8x+8. Hint: the real roots exist.?

2 réponsesMathematicsIl y a 6 années
• ### Please find all the asymptotes of the function f(x)=(2x^2+5x-4)/(x+3). Thanks in advance.?

2 réponsesMathematicsIl y a 6 années
• ### Identify the curve:x^2+4xy+4y^2-3x-6y-50=0, help, please.?

2 réponsesMathematicsIl y a 6 années

A ladder of 4 m leans against a wall with its feet on the floor. Between the ladder & the wall there is a cubic box of length 1 m at the foot of the wall & the inclined ladder is just touching a corner of the box.

Find the possible heights of the ladder from ground. (Round to 2 decimal places).

3 réponsesMathematicsIl y a 7 années
• ### Prove that the sum of i^2 from i=1 to n is n(n+1)(2n+1)/6, without using?

calculus nor mathematical induction.