AS Revision 1 | Scoins.net | DJS

## AS Revision 1

1    Write the equation of the line through (3.2) and (1,10), preferably in the ax+by=c form.

2    Write the equation of the line perpendicular to 2x + 3y = 16 that passes through (-1,2).

3    Write the equation of the circle with centre (2,3) and radius 5.

4    Show that x2 + 8x + y2 – 6y = 24 is a circle by finding its centre and radius.

5    Identify and classify the stationary values of y = 2x5 + 5x4 – 10x3 .

6    The curve y = (x - 3) (x + 1) has a tangent at x = 2. Find the equation of this line and state its intercepts.

7    Sketch the line in Question 5, showing intercepts and stationary values.

8    Attempt a sketch of the line   y  = (x + 3) / (x + 2)(x - 1)

Differentiation Practice

1    d/dx (x3 + 5x2)

2    d/dx (x-2 + 2x-1)

3    d/dt (5 √t – 1/t)

4    d/dt (y3)

5    d/dx (x2 + 5)4

6     d/dx (3x4 + 6)2

7    d/dt (x . y)

8    d/dx (3x2 + 1)( x3 - 3)

9    d/dx (1 + x + x2/2 +  x3/6 +  x4 /24)

10   Where is the maximum of         y = 2x3 – 6x2 + 7  ?

This exercise is graduated through the chain rule and the product rule.

Revise as necessary.  Be careful with the w.r.t. element (the x in d/dx ).

Index often fails to display as superscript. It varies with the software and particularly with transfers between software packages.

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