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A line passes through coordinates (-2,4) and (8,9). Does the point with coordinates (32,55) fall on this line?

To work out if a given point with coordinates (X,Y) falls on a line you must work out the equation for the line. All straight lines follow the formula: y=mx+c with 'y' being the Y coordinate, 'x' being the X...
NS
Answered by Nicholas S. • Maths tutor
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integrate with respect to x the function f(x)= xln(x)

Use integration by parts let u=ln(x) let dv/dx=x therefore du/dx=1/x and v=(1/2)x^2 therefore the integral of xln(x) is equal to the following: (1/2)x^2ln(x) - (integral with respect to x of:((1/2)x^2)/x) = ...
PJ
Answered by Priya J. • Maths tutor
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Find x: 4x + 7 = 27

4x + 7 = 27 4x = 20 x = 5
SP
Answered by Saskia P. • Maths tutor
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Differentiate: (12x^3)+ 4x + 7

36x^2 + 4
SP
Answered by Saskia P. • Maths tutor
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How do you conjugate the imperfect subjunctive?

Take the third person plural of the verb in the preterite tense: Estar - estuvieron remove the 'on' - estuvier Add 'a' on the end to form the first person singular in the Imp. Subjunctive - estuviera if you ...
ER
Answered by Eleanor R. • Spanish tutor
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