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New in iBooks Author 2 is the ability for you to add beautifully rendered equations to your books, written with the LaTeX and MathML Markup languages. iBooks Author supports all the common LaTeX commands that can be converted to MathML with the Blahtex engine. To add an equation to your page, first select the location where you want to add the text. Then, simply go up to the Insert menu and select Equation. Or, press Command+Option+E. The Edit Equation sheet will then pull down and you can begin editing your equation.
Now, there's two things to note. First of all, this is not a course on either of these two Markup languages. But we will step through the process of creating an equation so you know all of the steps that are required in iBooks Author. The second thing to note, is that normally when inserting LaTeX code, you would normally need to begin by enclosing your equation in Markup to indicate that you're entering Math mode. However, in iBooks Author, by going up to the Insert menu and selecting Equation, you're already in the Math mode.
So you can skip this entire part of your Markup. Now, let's go ahead and begin by adding a fairly common equation. We are going to add the equation x=-b, + or - the square root of B squared -4AC, over 2A. To create this equation using LaTeX, begin by simply typing in x=. You'll notice that as we type the LaTeX commands into the equation at the top, those commands are automatically rendered in the bottom down here to show us exactly how our equation is going to look.
Next, we'll need to add some curly braces to create a grouping. I always like to add both the opening and closing braces each time I add one, that way I don't forget to close a curly brace. We'll move our cursor back inside of those curly braces and we'll type -b\pm for plus or minus. Notice, that at the bottom, we're still getting our rendering of our equation. Things are looking pretty good. Let's go and add the square root sign. We'll do that by typing \sqrt and then create a new set of curly braces.
Notice as we close our curly brace, the square root sign appears in the bottom. We'll go inside of those curly braces and now we'll type in b, the caret symbol, which is usually Shift+6 on your keyboard, and then the number 2 to raise b to the second power. We'll then add -4ac and all of that is rendered perfectly. We'll then go outside of that set of curly braces and we'll continue typing our equation. Let's go ahead and add a space to separate our equation out, and then type in \over space 2a.
Our equation is now complete. We can now go ahead and insert this directly into our document by pressing the Insert button. Our equation is added to our page. Let's go ahead and hit Return to make sure that our equation is on its own line. Then, let's apply some formatting to it. Go ahead and click one time on the equation and go up to the Dropdown menu for Font Size in your toolbar and select a font size that's appropriate for your document. I'll go ahead and select 36. That looks pretty good. One more tweak, let's go ahead and center this equation.
That's looking much better. Now if we need to make a change to our equation, all we need to do is simply double-click the equation to bring back the Edit Equation sheet. We can then go ahead and make a change such as making this -4B. We'll then click the Update button and our equation appears beautifully rendered on our page.
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