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Integrate sec^2(x)tan(X)dx

This can be done with integration by substitution. If we let u=tanx then du/dx=sec^2(X). If we substitute U into the integrand we get it being u(sec^2(X))dx. rearranging the du/dx equation to make dx the sub...
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Answered by Amin Z. • Maths tutor
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What is Newtons third law of motion?

To every action, there is always an equal and opposite reaction.Force always occurs in pairs. Consider two bodies A and B, force on a body A by B is equal and opposite to the force on the body B by A.i.e,(Fo...
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Answered by Subin B. • Physics tutor
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Explain how price and output are determined for a firm in a monopolistically competitive market, in both the short run and the long run

There is a v simple formula for answering these 'explain' questionsStart with definitions - what is monopolistic competition? -10% of marksThen to score full marks, you must include:2 well-reasoned chains of...
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Answered by Will H. • Economics tutor
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Solve x^2=3(x-1)^2

To start with, we want to put this into quadratic form, where we have ax^2+bx+c=0. We notice that there are terms on both sides of the equation. So we can expand the right hand side and then bring all the te...
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Answered by Joshua U. • Maths tutor
3807 Views

State and explain how the attraction between nuclei and outermost electrons varies across group 3 (2 marks)

Attraction between the nucleus and the outer electrons increases across a group because the proton number increases and the atomic radius decreases due to increased nuclear charge.Across a group shielding re...
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Answered by Amy D. • Chemistry tutor
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