# Edexcel A Levels Core Maths 1 (C1)

### Unit C1: Core Mathematics 1

#### AS compulsory unit for GCE AS and GCE Mathematics, GCE AS and GCE Pure Mathematics

We are excited to present to you the C1 maths in a pretty unique manner.

The complete C1 teaching videos are unique. It is in the form of teaching by examples. The examples are carefully chosen and taught to you in such a way as to cover the entire C1 syllabus. They reflect examination questions and their standards.

It is concise, precise and all example driven. This may yet prove to be a more efficient, faster way for you to learn C1 and will especially be helpful to those without additional maths background and for those who fear maths.

We are confident you will do well in the C1 using these videos.

Module 1 Algebra and functions - Edexcel C1 (230:59 mins)

Laws of indices for all rational exponents.

The equivalence of $$a^{m/n}$$ and $$^n\surd{a^m}$$ should be known.

Use and manipulation of surds.

Students should be able to rationalise denominators.

The discriminant of a quadratic function.

Completing the square. Solution of quadratic equations.

Solution of quadratic equations by factorisation, use of the formula and completing the square.

Simultaneous equations: analytical solution by substitution.

For example, where one equation is linear and one equation is quadratic.

Solution of linear and quadratic inequalities.

For example, $$ax + b > cx + d$$, $$px^2 + qx + r \geq 0$$, $$px^2 + qx + r < ax + b$$.

Algebraic manipulation of polynomials, including expanding brackets and collecting like terms, factorisation.

Students should be able to use brackets. Factorisation of polynomials of degree $$n, n ≤ 3$$, eg $$x^3 + 4x^2 + 3x$$. The notation $$f(x)$$ may be used. (Use of the factor theorem is not required.)

Graphs of functions; sketching curves defined by simple equations. Geometrical interpretation of algebraic solution of equations. Use of intersection points of graphs of functions to solve equations.

Functions to include simple cubic functions and the reciprocal function $$y = \dfrac{k}{x}$$ with $$x ≠ 0$$. Knowledge of the term asymptote is expected.

Knowledge of the effect of simple transformations on the graph of $$y = f(x)$$ as represented by $$y = af(x), y = f(x) + a, y = f(x + a), y = f(ax).$$

Students should be able to apply one of these transformations to any of the above functions (quadratics, cubics, reciprocal) and sketch the resulting graph. Given the graph of any function $$y = f(x)$$ students should be able to sketch the graph resulting from one of these transformations.

Unit 1 Equations & Inequalities – Edexcel C1
Unit 3 Basic Algebra & Indices – Edexcel C1
Unit 4 Sketching Curves – Edexcel C1
Module 2 Coordinate geometry in the (x, y) plane - Edexcel C1 (70:03 mins)

Equation of a straight line, including the forms $$y – y_1 = m(x – x_1)$$ and $$ax + by + c = 0.$$

To include:

(i) the equation of a line through two given points

(ii) the equation of a line parallel (or perpendicular) to a given line through a given point. For example, the line perpendicular to the line $$3x + 4y = 18$$ through the point $$(2, 3)$$ has equation $$y – 3 = \dfrac{4}{3} (x – 2)$$.

Conditions for two straight lines to be parallel or perpendicular to each other.

Unit 1 Coordinate geometry in the (x, y) plane - Edexcel C1 PDF
Unit 2 Coordinate geometry in the (x, y) plane - Edexcel C1 Video
Module 3 Sequences and series - Edexcel C1 (77:59 mins)

Sequences, including those given by a formula for the nth term and those generated by a simple relation of the form $$x_{n+1} = f(x_n)$$.

Arithmetic series, including the formula for the sum of the first n natural numbers.

The general term and the sum to n terms of the series are required. The proof of the sum formula should be known. Understanding of $$\sum$$ notation will be expected.

Unit 1 Sequences and series - Edexcel C1 PDF
Unit 2 Sequences and series - Edexcel C1 Video
Module 4 Differentiation - Edexcel C1 (68:47 mins)

The derivative of $$f(x)$$ as the gradient of the tangent to the graph of $$y = f(x)$$ at a point; the gradient of the tangent as a limit; interpretation as a rate of change; second order derivatives.

For example, knowledge that $$\dfrac{dy}{dx}$$ is the rate of change of $$y$$ with respect to $$x$$. Knowledge of the chain rule is not required. The notation f'(x) may be used.

Differentiation of $$x^n$$, and related sums and differences.

For example, for $$n \neq 1$$, the ability to differentiate expressions such as $$(2x + 5)(x − 1)$$ and $$\dfrac{x^2 + 5x − 3}{3x^\tfrac{1}{2}}$$ is expected.

Applications of differentiation to gradients, tangents and normals.

Use of differentiation to find equations of tangents and normals at specific points on a curve.

Unit 1 Differentiation - Edexcel C1 PDF
Unit 2 Differentiation - Edexcel C1 Video
Module 5 Integration - Edexcel C1 (46:06 mins)

Indefinite integration as the reverse of differentiation.

Students should know that a constant of integration is required.

Integration of $$x^n$$.

For example, the ability to integrate expressions such as $$\dfrac{1}{2}x^2 - 3x^{-\frac{1}{2}}$$ and $$\dfrac{(x+2)^2}{x^\frac{1}{2}}$$ is expected.

Given f′(x) and a point on the curve, students should be able to find an equation of the curve in the form $$y = f(x)$$.

Unit 1 Integration - Edexcel C1 PDF
Unit 2 Integration - Edexcel C1 Video

** Our syllabus is current and updated to 2018