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How can I find the derivative of y = tan(x)?

Let's first recall the definition of tan(x) = sin(x)/cos(x). Hence, y' = d/dx( sin(x)/cos(x) ). Recall quotient rule for differentiation: ( f(x)/g(x) )' = ( f '(x)^2*g(x) - f(x)*g'(x)^2 ) / g(x)^2 and that d...
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Answered by Riccardo B. • Maths tutor
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How can I translate in Italian: ''In World War I, Italy joined the Entente with France and Britain, despite having been a member of the Triple Alliance with Germany and Austria-Hungary, and gave a fundamental contribution to the victory of the conflict. ?

Nella Prima Guerra Mondiale, l'Italia si uni' alla Triplice Intesa con Francia e Gran Bretagna, nonostante fosse stata membro della Triplice Alleanza con Germania ed Austria-Ungheria, ed ebbe ruolo fondament...
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Answered by Riccardo B. • Italian tutor
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How do I derive equations for Time of Flight and Range in Parabolic Motion?

A ball is thrown with a certain launch angle (theta) above the horizontal with a certain velocity v . Let us assume that the gravitational acceleration g is constant over the flight, the ball has no spin and...
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Answered by Riccardo B. • Physics tutor
2637 Views

Solve the following equations x^2-2x+4=0, x^2+4x+1=0

x 2 -2x+4= (x-2)(x-2)=0 x=-2 (double root) x 2 +5x+1=0 x 1,2 = -5+_ (5 2 -4(1)(1) ) 0.5 /2 x 1 =4.8 x 2 =-0.2 (to 1 d.p.)
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Answered by Kyriakos F. • Maths tutor
3716 Views

How do I go about approaching the unseen poem in the exam?

Firstly, make sure you re-read and have understood the question! This will give you an idea of what ideas and themes to look out for. Read the poem several times and mentally address these questions as you g...
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Answered by Vicky C. • English tutor
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