Subject Page 14

Lines in 3D We could represent a line by two equations that define the two planes that intersect on the line. This is not the most convenient way to think about the line usually, because when you have these two equations how do you solve them? Instead there’s another representation of a line in which…

IGCSE Coordinated Science: Evaporation Evaporation Evaporation mostly occurs at the surface of a liquid, and for evaporation to occur, the molecules must have enough kinetic energy. First, let’s define the word Evaporation. Evaporation is basically the change of state of a substance from liquid to gas. If you look back into the Topic “States of…

The Equation of a Line in Standard Form: Ax + By + C = 0 The equation of a line can be expressed in different ways: • Recall the equation of the line in slope yintercept form: y=mx+b• Standard form: Ax+By+C=0– A, B, and C are integers (No fractions)– Both A and B are not…

Visualizing surfaces in three dimensions. Review: Trying to draw a function of two variables As a first step, we can plot the graph of f, which is a function of two variables. How to vizualize function of 2 variable? z -> [Graph] z=f(x, y) To determine the possible values of x and y, we can…

IGCSE Coordinated Science: Circuit Diagrams Circuit Diagrams Draw and interpret circuit diagrams containing sources, switches, resistors (fixed and variable), lamps, ammeters voltmeters, and fuses. Draw and interpret circuit diagrams containing magnetizing coils, transformers, bells and relays Symbols: Transformers Coil Bell Relay

Parametric Line Questions The line intersects the plane at O, (5/2, 1/2) What if we never find a solution? If a line is parallel to the plane, then maybe whatnhappens is that when we plug in the positions of a moving point, we actually get something that never equals 7. Because maybe we actually get…

Hwk: Pg. 200: #6.a) If x is the supple montary angle of y, then y=2x. x+y=180x+2x=1803x=1803xx=1803x=60 y=2x=260=120 The angles are 60 and 120b)Similarly, x+5x=180x=30and 5x=150#7. X+2x+3x=90#9. 8-13w-2=-5w-3-14w-38-(3w)-(-2)=-5(w)-5(-3)-(4w)-(-3)8-3w+2=-5w+15-4w+310-3w=-9w+18-3w+9w=18-106w=86w6=86w=43 Solving Equations with FractionsGoal: To learn how to solve equations with Fractions.Example: Solve the following equations.a) x+53=-2 x+53=-21 Multiply both sides by the LCDLCD(3,1)=3Simplify3xx+53=3x-2 Move +5 to the…

IGCSE Coordinated Science: Synthetic Polymers Synthetic Polymers Describe the formation of poly(ethene) as an example of addition polymerisation of monomer units. A polymer is a substance that contains large molecules formed by many small molecules added together. Let’s take ethene as an example A polymer that is made from ethene is called “Poly-ethene”. Poly- basically…

IGCSE History: World War I – Verdun Battle of Verdun: (21st February – 18th December, 1916) Verdun and its defenses: Consisted of 12 fortresses. Was very well fortified. It was a symbol of French pride. Battle plan: The first act was a thorough shelling of the French defenses using 1 200 guns. Then a battle…

CFA Level 1 – Derivative Investments, Session 17 – Reading 71, Option Markets and Contracts – LOS i (Notes, Practice Questions, Sample Questions) 1. A call option’s intrinsic value: A) increases as the stock price increases above the strike price, while a put option’s intrinsic value increases as the stock price decreases below the strike price.B) decreases…