Frederico
 Name:
 Frederico Dos Santos
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Questions Answered

Frederico:
need help on lim when x>> infinit of (ln(x))/x
 updated 10 months ago
 2 replies
 1 Medal
Mathematics

Frederico:
need help on lim >1 of sin(pi*x)/(x1)
…
 updated 10 months ago
 30 replies
 1 Medal
Mathematics

Frederico:
And this one? y=3^{x^32x > y'?
 updated 10 months ago
 4 replies
 No Medals Yet
Mathematics

Frederico:
what is the derivative of e^x+e^(x)+e^(2x)
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 updated 10 months ago
 7 replies
 1 Medal
Mathematics

Frederico:
Is this answer correct?
 updated 10 months ago
 9 replies
 3 Medals
Mathematics

medalgiver!:
Which fractions are equivalent to the fraction below? Check all that apply. 3/4
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 updated 11 months ago
 6 replies
 1 Medal
Mathematics

Frederico:
I didn't get it. Can someone explaint to me?
 updated 11 months ago
 11 replies
 2 Medals
Mathematics

Frederico:
Why limit sin(7x)/(4x) as x>0 from the left is 7/4?
 updated 11 months ago
 22 replies
 2 Medals
Mathematics

Frederico:
u=<2,1> what are the vector v1 and v2 with norma 5 and 60 degrees with vector ? got stuck on system resolution.
 updated 11 months ago
 44 replies
 1 Medal
Mathematics

Frederico:
How to start?
 updated 11 months ago
 15 replies
 1 Medal
Mathematics

Frederico:
vectors: solve x for AB=CD (vectors) A(x,1),B(4,x+3),C(x,x+2) and D(2x,x+6)
where should I start?
 updated 11 months ago
 10 replies
 2 Medals
Mathematics

Frederico:
I used "OR" instead "AND" cause I saw that it would work(the graph showed me). Can someone explain to me why it worked? MEDAL
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

Frederico:
Please, help me to solve this: abs(x^21)>=abs(2x)1/3 (algebraically )
sorry
 updated one year ago
 6 replies
 1 Medal
Mathematics

Frederico:
How to solve it: abs(x^21)<=abs(x) // I'll give a medal
 updated one year ago
 10 replies
 2 Medals
Mathematics

Frederico:
The question is attached.
 updated one year ago
 17 replies
 4 Medals
Mathematics

Frederico:
Hi, I have this question to solve and don't know how to start. A fully completed limit computation is presented below. Please see the attach…
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

Frederico:
What is the limit as x approaches 0 of (sin(x^2 +1/x)sin(1/x))/x, step by step, please.
 updated one year ago
 9 replies
 1 Medal
Mathematics

twilaswift:
ATTACHMENT HELP! will give medal!
What is the area of the composite figure shown?
 updated one year ago
 7 replies
 1 Medal
Mathematics

Frederico:
Why (2*tan(x^2))/x^2 = 1?
 updated one year ago
 5 replies
 No Medals Yet
Mathematics

hguillerm731:
the problem 1A4 c)
don't understand why profesor cancel 2
2a/a^2x^2  2x/a^2x^2 and he end with
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 updated one year ago
 2 replies
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Mathematics