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<blockquote data-quote="TBItoy" data-source="post: 529478" data-attributes="member: 1384"><p>f(x) is just and abbreviation.</p><p></p><p>f(x) is "f as a function of x" commonly read as "f of x"</p><p></p><p>f is literally equal to 6x-5</p><p></p><p>x is the variable, it is just a place to input a value. any value.</p><p></p><p>f(f(x)) is the function "f" with the function "f" in place of x. (the variable in this "new" function is the whole original function)</p><p></p><p></p><p>same with g.</p><p></p><p></p><p></p><p></p><p>The letters aren't important, they are just placeholders, or abbreviations.</p><p></p><p></p><p></p><p>All you have in the first picture is 2 functions (and 2nd order composition of those functions)</p><p></p><p>There is nothing to "solve", because there is no question being asked.</p><p></p><p>Basically you have the start of a math problem, without the problem statement.</p><p></p><p></p><p>for example:</p><p></p><p>If you asked "Find the value of x where f(x)=g(x)" you could do the math out and solve for x.</p><p></p><p></p><p></p><p></p><p></p><p>No.</p><p></p><p>if x=1, then f(1)=1 and g(1)=1/2</p></blockquote><p></p>
[QUOTE="TBItoy, post: 529478, member: 1384"] f(x) is just and abbreviation. f(x) is "f as a function of x" commonly read as "f of x" f is literally equal to 6x-5 x is the variable, it is just a place to input a value. any value. f(f(x)) is the function "f" with the function "f" in place of x. (the variable in this "new" function is the whole original function) same with g. The letters aren't important, they are just placeholders, or abbreviations. All you have in the first picture is 2 functions (and 2nd order composition of those functions) There is nothing to "solve", because there is no question being asked. Basically you have the start of a math problem, without the problem statement. for example: If you asked "Find the value of x where f(x)=g(x)" you could do the math out and solve for x. No. if x=1, then f(1)=1 and g(1)=1/2 [/QUOTE]
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