ECAT maths help

[princesszahra]

integration of (x+4)/(x+3) wrt x

options are
a ln(x+3)
b 4x+ln(x+3)
c x+ln(x+3)
d x^2 + ln(x+3)


integration of e^(tan-1x) / (1+x^2) wrt x
a e^tan-1x
b 1/ (e^tan-1x)
c ln (1+x^2)
d ln( e^(tan-1x)

 

[princesszahra]

integration of (cot(lnx))/ ( x) wrt x
a ln(cos(lnx))
b sin(lnx)
c ln sin (lnx )
d none


what is meant by the degree and order of diffrenial equation

 

[alphabravocharlie]

And what are the answers?
are the first and third one c?

 

[Andywin]

Really good.I will concern about it.




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[misssoozy]

integration of (x+4)/(x+3) wrt x

options are
a ln(x+3)
b 4x+ln(x+3)
c x+ln(x+3)
d x^2 + ln(x+3)
The answer is option c.( x+ln(x+3))

integration of e^(tan-1x) / (1+x^2) wrt x
a e^tan-1x
b 1/ (e^tan-1x)
c ln (1+x^2)
d ln( e^(tan-1x)

The answer is option a(e^tan-1x)

 

[misssoozy]

integration of (cot(lnx))/ ( x) wrt x
a ln(cos(lnx))
b sin(lnx)
c ln sin (lnx )
d none


what is meant by the degree and order of diffrenial equation

The answer is option c (ln sin (lnx ))