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if sqrt(y)=(arctan)tan-1(x), show that (1+x^2)dy/dx((1+x^2)dy/dx)=2
Now we prove Machin's formula using the tangent addition formula:
tan(A+B)= tanA+tanB/1-tanAtanB. If A= arctan(120/119) and B=
2 answers
asked by
alex
1,247 views
For the transformation w=(z+i)/(z-i)
show that as z moves along the real axis, w moves along a circle centre O and radius 1 I do
0 answers
asked by
Jake
600 views
1.Evaluate: (1/(x*sqrt(x^2-4))
I know the answer is -1/2*arctan(2/sqrt(x^2-4)), but I am having trouble getting to this answer on
0 answers
asked by
Sandy
500 views
Let f be a function defined by f(x)= arctan x/2 + arctan x. the value of f'(0) is?
It's 3/2 but I am not very clear on how to
1 answer
asked by
Jamie
1,501 views
if sqrt(y)=(arctan)tan-1(x), show that (1+x^2)dy/dx((1+x^2)dy/dx)=2
1 answer
asked by
NGOFAKA
490 views
if sqrt(y)=arctan(x), show that (1+x^2)dy/dx((1+x^2)dy/dx)=2
1 answer
asked by
NGOFAKA
776 views
I'm unsure how to even start this problem
Solve for x: Arctan( -4/5 ) + Arcos (2/SQRT(5) ) = Arctan(x)
1 answer
asked by
Kate
535 views
Pls help solve this problem
if sqrt(y)=(arctan)tan-1(x), show that (1+x^2)dy/dx((1+x^2)dy/dx)=2
0 answers
asked by
NGOFAKA
446 views
Evaluate the integral (3x+4)/[(x^2+4)(3-x)]dx
a. (1/2)ln(x^2+4) + ln|3-x| + C b. (1/2)arctan(x/2) + ln|3-x| + C c.
0 answers
asked by
Darren
435 views
The values of x that are solutions to the equation cos^(2)x=sin2x in the interval [0, pi] are
a. arctan(1/2) only b. arctan(1/2)
1 answer
asked by
Carson
666 views