Given that logab=2.75 and logac=0.25,find the value of: i)logabc ii)loga(bc)2 State whether the following are ODD,EVEN or neither. i)fx=3x+1 ii)fx=x4-x2 The first term of geometric sequence is 2 and the fourth term is 128. Find the common ratio.
For the following sequence:36,24,16..... Determine whether it is an Arithmetic or Geometric Progression, showing reasons. Find limx→4x2-x-12x-4 Differentiate: i)4x2-x+1 ii)3x iii)3x5-2x3+5x2 iv)3x2-3 v)3x25-3x
If f(x)=4x−7, find f(a+1) If cos A = 0 ⋅407 find A, where A is an acute angle.
i)Find all the x & y-intercepts for the curve with the equationy=x3-1. ii)Neatly sketch the curve y=x3-1 , showing the information from part i). iii)Find the equation of the tangent to the curve y=x3-1 at the point where x=1. If f(x)=15x-2-9x3.find the value of f '( -1). Differentiate f(x)=x2-3x by first principles using the definition f'x=f(x+h)-fxh
Find limx→4x2+x-20x-4 limx→∞4-x+2x2x2+7x-9 Differentiate the following y=(7-2x)6 y=7x-3+4x-17 f(x)=xx-2 f(x)=x+4x+5 Write down a quadratic equation with roots 4 and−7. If f(x)=x2+16 find f′(3). For the parabola (x+2)2=4y−8, find the: coordinates of the vertex; coordinates of the focus; equation of the directrix.
Consider the parabola 4y=x2-4x i)Show, algebraically,how the parabola can be expressed in the form (x-2)2=4(y+1) ii)Write down the coordinates of the vertex and the focus. iii)Find the equation of the directrix.
What is the equation of a quadratic with roots 1-2 and 1+2 ? (A) x2+2x-1=0 (B) x2-2x-1=0 (C) x2+2x-1=0 (D) x2-2x-1=0
What is the gradient of a line that is perpendicular to 4x-3y=0 ? (A) 4 (B) −4 (C) 43 (D) -34
What is the derivative of (1-2x)5 (A) 5(1-2x)4 (B) -5(1-2x)4 (C) 10(1-2x)4 (D) -10(1-2x)4
i)Sketch y=logax+2, Showing the x and y-intersections and the asymptote. ii)Hence,state the doain and range of y=log2x+2. In a certain arthematic series the 9thterm is 78, the 17thterm is 50.Find i)The first term and the common difference. ii)The sum of the first forty terma iii)The value of n for which the sum of the series is first negative.
If f(x)=x2-x find the simplest expression for f(x+h). A function y=fx is defined as folows: f(x)=-2, x≤-1x+1 -1<x<2x2+1 x≥2 i)Evaluate f(-1)+f(2) ii)Write an expression for f(a2+2)
Use the quadratic formula to solve x2+4x-6=0. Express your answers in simplest surd form. Sketch the following on separate number planes: 3x-2y+12=0: y=4x: y=x2-4x+3
State the domain of the following: y=2x2-1 y=2-x State whether the following are ODD, EVEN or NEITHER. Justify your answer. f(x)=1-x2 f(x)=x1+x2 f(x)=-3x-x2 f(x)=-3|x|
What is the domain of the function y=2-x ? State whether the following functions are ODD,EVEN or NEITHER i)fx=x2+12 ii)fx=-xx2+1
What is the slope of the line x+3y-5=0? Sketch the following showing essential features: i) y=x+2 ii) y=2 iii) xy=2 iv) y=x-2 For the parabola x2=8(y-1).write down the: i) co-ordinates of the vertex ii) focal length iii) co-ordinates of the focus iv) equation of directrix Find the equation of the following lines (giving your answer in general form) i)through (4,6) with slope -2. ii)prependicular to x-2y+5=0 and passing through (3,6)
Differentiate f(x)=x2-6x+1,find: i)the equation of the axis ii)the range of values of y Find the prependicular distance of the point 4,1 from the line 3x-4y+12=0. Sketch the regions of the number plane defined by: i)x2+y2≤16 ii)y>x2+9
Differentiate the following: i)y=3-x+x2 ii)y=x iii)y=x+1x-2 iv)y=(2-3x2)5 Find the centre and radius of the circle x-4y+y2+6y=0
Find T10 of 5+9+13+17+.... If fy=9-y2,Find: i)f2 ii)fy+1 State the domain of fx=3-x Find x in the following: i)logx36=2 ii)log8128=x
Find the sum of the first 9 terms of 2-1+12-14+..... State whether the following functions are ODD,EVEN or NEITHER. i)fx=49+x2 ii)fx=x9+x iii))fx=-x9+x
Sketch the following lines on separate diagrams (showing essential features): i)y=x+2 ii)3x-y-6=0 Find limx→4x-4x2-16
Cookies help us to deliver the best experience on our website. By using our website, you agree to the use of cookies. Find out how we use cookies.