Physics, Chemistry, Mathematics Forums

A CUBIC EQUATION f(x) = 0 has a real root x and two complex roots a+ib and a-ib these points are represented as pts.A,B,C respectively in argand plane. SHOW THAT THE ROOTS OF THE DERIVED EQUATION f'(x) = 0 (i.e DERIVATIVE OF f(x) ) ARE COMPLEX. IF A FALLS ON ANY ONE OF THE TWO EQUILATERAL TRIANGLES DESCRIBED ON BASE BC

hi guys

here's another problem

a particle is executing S.H.M in a straight line. in first second starting from rest  it covers a distance a and next second distance b in same direction. find out the amplitude.

Respected Sir,
I had given my open global online test. When would I be allowed to see the solutions of the test and how can i know my rank in this test.

I heard Global Open tests will be online on 2nd , and it's 4th already and we have no signs of them being online, I have received my password in mail but could someone point me out to the actual things?

sir what should i do to enrole in the screening and mains open test conducted by indianet supposed to be conducted on april 9

Hi!

Is Heights and Distances included in the syllabus? Its not mentioned directly and is given in some materials but not in others. However, there is a topic called applications of trigonometry in the syllabus. Can you please clear me out?

Thanks,
Abhishek.

please explain me about alternating current,directions in A.C circuits
difference between D.C and A.C

these are small doubts that stopped me proceeding further

1) when we integerate a odd or differentiate a odd function should we get a even function and vice versa

for eg-integeral sinx=-cosx
        d(sinx)/dx=cosx

here sinx is an odd function and while both integrating and differentiating we get an even function cosx

2) what should we do if we have to area under the curve if it involves points of inflection should we seperately integerateeach of them and add their modulii or as usual integerate between the upper and lower limits

3) what are the general procedure to follow when asum invoves modulus function and greatest integer function something like squaring or sandwiching principle

thats all for this one please answer these
to manish sir

Check out this optics problem:

A small convex mirror is placed 60cm from the pole and on the axis of a large concave mirror of R=200cm. The position of the convex mirror is such that the image of a distant object is formed in the plane of the hole cut at the Centre of the concave mirror.

Find height of the final image of the distant object if it subtends an angle of (½)° at the pole of the concave mirror.

  WHAT IS GAS EUDIOMETRY?

what is Iodimetric& Iodometric