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find the definite integral between limits 1 and 2 of (4x^3+1)/(x^4+x) with respect to x

first notice the integral is in the form f'(x)/f(x), and indefinite integrals of this form are ln|f(x)|+c. therefore the integral is [ln|x 4 +x|] between limits 1 and 2. subbing in limits gives ln|2 4 +2|-ln...
TD
Answered by Tutor22645 D. • Maths tutor
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What are the postulates of special relativity?

There are two postulates of special relativity: 1. The laws of physics are invariant in all inertial frames of reference. What this means is that if we have a description for how physical systems undergo cha...
SP
Answered by Srijan P. • Physics tutor
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Form the differential equation representing the family of curves x = my , where, m is arbitrary constant.

Differentiating the above equation with respet to y:dx/dy = m;Substituting the value of m in the given form:x = (dx/dy) y i.e. the solution is(dx/dy) y - x = 0
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Answered by Piyush S. • Maths tutor
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Explain the workings of a mass spectrometer

Charged particles are fired into a magnetic field (perpendicular to the motion of the particles). Using Fleming’s left hand rule, a magnetic force acts centripetally – such that the charged particles exhibit...
DS
Answered by Dan S. • Physics tutor
7960 Views

How do I use the subjunctive?

The subjunctive is probably the trickiest part of French grammar! To simplify things, the subjunctive may be used in 3 cases: After circumstancial phrases: For example - bien que, pour que, pourvu que, avant...
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Answered by Jennifer F. • French tutor
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