Evaluating a function, Mathematics

Assignment Help:

Evaluating a Function

You evaluate a function by "plugging in a number".

For example, to evaluate the function
f(x) = 3x2+ x -5
at x = 10, you plug in a 10 everywhere you see an x:
f(10) = 3(10)2 + 10 - 5
=3(100) + 10 - 5
=300 + 10 - 5
=305

To evaluate f at x = z + 1, you would write

f(z + 1)= 3(z + 1) 2 + (z + 1) - 5
The thing to be careful of is parentheses. Notice how in the first term, the entire expression (z + 1) is squared? If you wrote

f(z + 1) = 3z + 1 + (z + 1) - 5 (wrong!)

it would be wrong. You need the whole expression squared and multiplied by 3, and the parentheses are needed to make it happen!

 

 


Related Discussions:- Evaluating a function

Introduction to computers, What is a Computer? A computer is ...

What is a Computer? A computer is an electronic device which senses or accepts input data, performs operations or computations on the data in a pre-arranged sequence

Faltings theorem, What is Faltings Theorem? Explain Faltings Theorem

What is Faltings Theorem? Explain Faltings Theorem

Solving algebraic word problems, Solving Algebraic Word Problems: What...

Solving Algebraic Word Problems: What are the capacities of two water storage tanks in a nuclear facility if one holds 9 gallons less than three times another, and their whole

How many students are study physics alone, A class has 175 learners. The gi...

A class has 175 learners. The given table describes the number of learners studying one or more of the subsequent subjects in this case                 Subjects

Sample of proportion program., help me with how to write sample of proport...

help me with how to write sample of proportion using visual basic

staticis, a statisics professor plans classes so carefully that the length...

a statisics professor plans classes so carefully that the lengths of her classes are uniformly distributed between 46.0 and 56.0 minutes. find the probability that a given class pe

Calculus, how to find the volume

how to find the volume

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd