Frederico
 Name:
 Frederico Dos Santos
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Questions Asked

Frederico:
Group Title
I'd like a help, dont know how to start: Find a linear operator T: R³>R³ that the kernel is generated by (1,2,1) and (1,1,0)
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 updated 9 days ago
 1 reply
 1 Medal
Mathematics

Frederico:
Group Title
need help on lim when x>> infinit of (ln(x))/x
 updated one year ago
 2 replies
 1 Medal
Mathematics

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

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

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

Frederico:
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Is this answer correct?
 updated one year ago
 9 replies
 3 Medals
Mathematics

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

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

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

Frederico:
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How to start?
 updated one year ago
 15 replies
 1 Medal
Mathematics

Frederico:
Group Title
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 one year ago
 10 replies
 2 Medals
Mathematics

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

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

Frederico:
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lim_{x rightarrow 5} frac{ x^4625 }{x+5}
 updated one year ago
 No Medals Yet
Mathematics

Frederico:
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test question
 updated one year ago
 No Medals Yet
Mathematics

Frederico:
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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:
Group Title
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

Frederico:
Group Title
Why lim x>0 2*tan(x^2)/x^2=2?
 updated one year ago
 18 replies
 3 Medals
Mathematics

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