Questions Asked

ethayer:
Group Title
After the appropriate substitution, the integral of 1/(x sqrt(x^2+1)) dx becomes _____?
 updated 2 years ago
 1 reply
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ethayer:
Group Title
I can't seem to get a value for the area between these two polar curves: 2+sin(theta) and 3sin(theta)
Area = .5 * Integral of (r^2 * dthe…
 updated 2 years ago
 16 replies
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ethayer:
Group Title
I can't seem to get a value for the area between these two polar curves: 2+sin(theta) and 3sin(theta)
Area = .5 * Integral of (r^2 * dthe…
 updated 2 years ago
 12 replies
 No Medals Yet

ethayer:
Group Title
evaluate as a power series...
Integral of [arctan(x)/x]
 updated 2 years ago
 1 reply
 1 Medal

ethayer:
Group Title
Balanced equation for the following reactions:
1) Ca5(PO4)3OH (s) + CH3COOH (aq) >
2) Pd (s) + HBr (aq) >
…
 updated 2 years ago
 4 replies
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ethayer:
Group Title
Balanced equation for the following reactions:
1) Ca5(PO4)3OH (s) + CH3COOH (aq) >
2) Pd (s) + HBr (aq) >
…
 updated 2 years ago
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ethayer:
Group Title
integral of 1/(n^2 + 6n + 13)?
Does it help to write the denominator as (n + 3)^2 + 4?
 updated 2 years ago
 1 reply
 1 Medal

ethayer:
Group Title
Why is the mixture of 1M Pb(NO3)2 and 2M NaI cause a light to shine brightly (strong electrolyte) and not dimly?
I see that an aq solution …
 updated 2 years ago
 1 reply
 1 Medal

ethayer:
Group Title
determine if this is convergent or divergent? If convergent, find the value.
integral (from 0 to infinity) of e^x / (e^2x + 3)
 updated 2 years ago
 3 replies
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ethayer:
Group Title
Where does the KE go during freezing point depression?
 updated 2 years ago
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ethayer:
Group Title
How can you tell if an amino acid will be located on the interior or exterior of a protein? Does it deal with hydrophobic and hydrophyllic?
 updated 2 years ago
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ethayer:
Group Title
derivative of x^sqrtx?
 updated 2 years ago
 19 replies
 3 Medals

ethayer:
Group Title
integral of x/(x^4 + 25)
 updated 2 years ago
 19 replies
 3 Medals

ethayer:
Group Title
how do I simplify sqrt(1cos^2(2x))? I think I should get sin(2x)
 updated 2 years ago
 6 replies
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ethayer:
Group Title
derivative of arcsin(cos(2x))
is this chain rule?
 updated 2 years ago
 7 replies
 1 Medal

ethayer:
Group Title
differentiate y = ln(sin(lnx))
can you give me a hint of how to start?
get rid of ln by raising the whole thing to the power of e?
 updated 2 years ago
 2 replies
 1 Medal

ethayer:
Group Title
Does this form a complex ion?
AlCl3 + CuSO4 > ???
I said it was a double displacement, but the products and reactants are all aqueous so…
 updated 2 years ago
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ethayer:
Group Title
integral of (secx*cos(2x))/(sinx+secx)?
 updated 2 years ago
 5 replies
 2 Medals

ethayer:
Group Title
integral of 1/(x^2sqrt(4x+1))?
I tried trig substitution since it looks like sqrt(x^2+a^2) with x=2sqrtx and a = 1
 updated 2 years ago
 25 replies
 1 Medal

ethayer:
Group Title
integral of (x1)e^x/x^2?
 updated 2 years ago
 31 replies
 3 Medals

ethayer:
Group Title
integral of sqrt(1+e^x)? I was told to make the whole thing my u for u substitution.
 updated 2 years ago
 7 replies
 2 Medals

ethayer:
Group Title
integral of (x^22x1)/[(x1)^2(x^2+1)]?
I tried using rational functions with A/x1, B/(x1)^2, and (Cx+D)/(x^2+1)...
 updated 2 years ago
 2 replies
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ethayer:
Group Title
integral of (3t2)/(t+1)
 updated 2 years ago
 11 replies
 2 Medals