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Fundamental Theorem of Pre-calculus

The Fundamental Theorem of Algebra helps in telling everyone about the polynomial function as such is supposed to be having one complex zero. Therefore, the individuals need to find rational zeros of a polynomial function. This theorem is thus, deemed to help form the foundation or the groundwork for solving polynomial equations. The fundamental or crucial theorem of calculus is considered to help in understanding the evaluation of the theorem as it states that the individuals have to find an antiderivative for the integrand and this would help in assessing the definite integral calculus part through the evaluation of the anti-derivative as it would act as endpoints for the interval as it would be subtracting. In the case of pre-calculus when the remainder theorem is supposed to be polynomial P(x) is supposed to be divided by (x-a), then the remainder is considered to be P(a). This is supposed to be the lower bound theorem. If in case P(x) / (x-a) is deemed to have a quotient and along with such a remainder then that alternates the sign and P(x) has no real zeros which is supposed to be less than a.

Important Topics of Pre-Calculus

The important topics of precalculus are considered to be inclusive of the course summary which is also having the composite as well as inverse functions and it would also be having trigonometry as well as complex numbers and rational functions. This would be through the basis of conic sections which would also act as vectors as well as matrices. Thus, the primary topics would be inclusive of the complex numbers along with rational functions and trigonometric functions that would also be consisting of their inverses as the inverse functions would be based on vectors and along with such matrices which would be having parametric as well as polar curves. In order to work on pre-calculus, the individuals should be aware of working with units along with equations and expressions as well as ratios and proportions as well as inequalities and exponents and logarithms as well as factorization and functions with the help of linear equations among other things. Pre-calculus is supposed to be important and crucial because it is supposed to provide the individuals with building blocks where the students would require learning in higher-up courses. These would not help in keeping up with the lessons that are supposed to be taught as it would be through a pre-calculus course which would run the risk of falling behind the rest of the class.

What are the Difficult Areas of Pre-Calculus?

The difficulties in pre-calculus are considered to be in connection with the in-depth study of Analytic Geometry of Conic Sections and along with such polar equations as these are supposed to be generally considered as the most difficult aspects of the Pre-calculus. This is supposed to be difficult because it requires the individuals to work on their algebraic skills which would help them in learning the largely unrelated and irrelevant material simultaneously. In addition to this, the gigantic and enormous syllabus in pre-calculus is also supposed to be a big test of the ability as it is supposed to make the individuals learn quickly in a more efficient manner. Calculus is not considered to be any more advanced than pre-calculus as it uses all the same mathematics as of pre-calculus. However, there are certain new definitions in connection with limits but the mechanics of such stuff is supposed to be on the basis of pre-calculus mathematics concepts

What is the Difference Between Calculus and Pre-calculus?

Pre-calculus is considered to be concentrated on algebraic knowledge as such would hopefully permit the student to understand calculus but it needs to help or assist the students in constructing as well as following proofs as this would help them in comprehending and understanding basic trigonometric functions which are related to sine, cosine as well as a tangent. This makes the algebraic manipulations a lot easier and more comprehensive as this creates a better understanding of how mathematics can model things that are experienced and used in the real world. On the other hand, when students are considered to begin learning calculus, they are supposed to have integral and derivative calculus which they need to understand instead of just memorizing. This would assist them in evaluating the derivative as a derivative point is something that helps in getting an approximate slope or a curve by using two points. This is supposed to bring those points together. Therefore, this infinitely brings the other closer for usage. Thus, it can be stated that for most the usage of AP or calculus is considered to be through the usage of integrals and derivatives. Thus, this helps in evaluating and manipulating them as this would be part of one another. On the other hand, understanding or comprehending such would help in realizing the significance as it would be pretty cool to use in math as these would result in something meaningful.

Some of the important topics under Pre-Calculus Are

The primary topics in pre-calculus are inclusive of com-plex numbers along with rational functions, trigonometric functions along with inverses as well as inverse functions and vectors and matrices as well as parametric and polar curves. This particularly concentrates on the properties of functions that study the trigonometric, as well as logarithmic and exponential functions, and the students, also learn about sequence and other concepts which are supposed to be essential for the study of calculus.

Pre-Calculus Formulas

“cos (A + B) ...

(a - b)2 = a2 - 2ab+ b. ...

(a + b)(a - b)= a2 - b. ...

(a + ib) × (a - ib) = a2 + b. ...

Sum of n terms in an arithmetic series, Sn = n2[2a+(n−1)d)] n 2 [ 2 a + ( n − 1 ) d ) ]

Equation of a circle = (x − h)2 + (y − k)2 = r2, with the center at (h, k)

Complex Numbers

(a + ib) + (c + id) = (a + c) + i(b + d)

(a + ib) - (c + id) = (a - c) + i(b - d)

(a + ib) × (a - ib) = a2 + b2

Polynomials

(a + b)2 = a2 + 2ab + b2

(a - b)2 = a2 - 2ab+ b2

(a + b)(a - b)= a2 - b2

(a + b + c)2 = a2 + b2 + c2 + 2ab + 2bc + 2ac

Trigonometry

Pythagoras Theorem: Hypotenuse2 = Perpendicular2 + Base2

sin θ = 1 / cosecθ (OR) cosec θ = 1 / sinθ

cos θ = 1 / secθ (OR) sec θ = 1 / cosθ

tan θ = 1 / cotθ (OR) cot θ = 1 / tanθ

sin (A - B) = sin A cos B - cos A sin B

cos (A + B) = cos A cos B - sin A sin B

cos 2θ = 1 - 2 sin2θ”

Solved Examples of Pre-calculus

Example 1:

“Graph the function tex2html_wrap_inline111 and answer the following questions:

Determine the interval(s) where the function f(x) is increasing? is decreasing?

Determine the relative minimum and maximum values of the function.

Determine all the intercepts.

Determine whether f(x) is an odd function, and even function, or neither.

Answer: The function is even, its four x-intercepts are at x=-3, x=-2, x=2 and x=3. The function is increasing on the intervals tex2html_wrap_inline127 and on tex2html_wrap_inline129, the function is decreasing on the intervals tex2html_wrap_inline131 and on tex2html_wrap_inline133. The maximum value is 36, attained at x=0; the minimum value is -6.25, attained at tex2html_wrap_inline137.”

Example 2:

“Let A=(3,1), B=(7,-4) , and C=(10,9).

Find an equation for the circle passing through the point B centered at A.

Is point C inside or outside of this circle? Prove your answer.

Answer: An equation of the circle is displaymath103. The point C lies outside the circle.”

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