Mark M.

04/28/19

Why do we use the word "scalar" and not "number" in Linear Algebra?

During a year and half of studying Linear Algebra in academy, I have never questioned why we use the word "scalar" and not "number". When I started the course our professor said we would use... more

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Geometry

04/27/19

An isosceles triangle ABC with the base BC is inscribed into a circle. Find the measure of angles of it, if measure of arc BC=102°.

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Algebra 1

04/27/19

What are the solutions to z^3+8i=0?

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Calculus

04/26/19

Let f′′(x)=36x^(2)+10 f(1)=4, f′(1)=8. Then f(x) =

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Algebra 1

04/26/19

Can you find all zeros (real or complex) of f(x) = x^5-4x^4+4x^3+10x^2-13x-14?

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Math Calculus Sequence

04/26/19

Find the Maclaurin series for f(x) = cos(x^2) and use it to determine f^ (8)(0).

Find the Maclaurin series for f(x) = cos(x2)and use it to determine f (8)(0).

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Algebra 1

04/24/19

Find the x-intercepts of f(x)=x(x+1)^3(x-3)^2 and determine the behavior at the intercepts.

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Algebra 1

04/24/19

Proportion Rational equations

Byron wanted to try out different water craft. He went 124 miles downstream in a motor boat and 45 miles downstream on a jet ski. His speed on the jet ski was 10 mph faster than in the motor boat.... more

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Precalculus

04/24/19

You are given triangle ABC with angle A=33 degrees, a=6 and c=7. Use law of cosines to show to possible answers for b. How do I solve?

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Trigonometry

04/23/19

How can I prove that |sin x|≤1?

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Calculus

04/23/19

Find the value of loga81 given that loga3=1.618?

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Algebra 2

04/23/19

A fraction has a value of 3/5. If the numerator is decreased by 8 and the denominator is increased by 3, its value is 1/4. Find the original fraction.

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Prealgebra

04/22/19

How many terms are in the expression?

2x - xy + 4y - 1

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Precalculus

04/12/19

Find fog and gof. Also, find the domain for each of the two compositions (write in interval notation.)

f(x)= 4/x²-1 and g(x)= x+1

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Calculus Quadratic Equation

04/08/19

Gr11 Function Quadratic

A quadratic function is defined by f(x)=2x^2+5x+3. A linear function is defined by g(x)=mx+1. What value(s) of the slope of the line would make it tangent to the parabola?

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Algebra 2

03/25/19

use the arithmetic summation formula to find the sum of the series: -6+2+2+...+58

I know how to solve these types of questions, but I can't find a common ratio/difference because it's +2+2.

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Calculus

03/15/19

inverse function

2. The function f(x) = 3x^3 + 2x + 1 is invertable. If g(x) = f-1(x), ﬁnd g'(1).3 The function f(x)=2x^3+3-5 is invertable. If g(x)=f-1(x), find g'(-5).

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Precalculus

03/15/19

How do I 'use the fundamental identities to simplify the expression (cotθ)(secθ)'?

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Math Trigonometry Double Angle Identities

03/11/19

Given that sin(2x) = 24/25, and 45 degrees < x < 90 degrees, find cos(2x)

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Calculus Taylor Polynomial

03/01/19

Generate the Taylor Polynomial

Generate the Taylor Polynomial of order 3, by definition, using f(x)=sin(2x) at x=pi/4

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Calculus Ap Calculus Bc

02/25/19

Differentiable function

Let f be a differentiable function defined for all x>0 such that (i) f(1) = 0, (ii) f'(1) = 1 and (iii) d[f(2x)]/dx = f'(x), for all x>0. (a) find f'(2)(b) suppose f' is differentiable, prove... more

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Algebra 2

02/14/19

what is the reference angle for 245?

what is the reference angle for 245?a. 25 degreesb. 35 degreesc. 45 degreesd. 55 degreese. 65 degrees

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Calculus

02/14/19

Find two positive numbers whose sum is 8, such that the sum of the square of one number and the cube of the other number is a minimum. Use calculus to justify your solution

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Calculus

02/13/19

Find (f ^(−1))'(a). f(x) = 4x3 + 4x2 + 6x + 8, a = 8

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Math Pre Calculus Mathematics

02/12/19

Find a polynomial function with the zeros -2 (multiplicity 2) and 2 (multiplicity 2), whose graph passes through the point (-3,100)

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Why do we use the word "scalar" and not "number" in Linear Algebra?

An isosceles triangle ABC with the base BC is inscribed into a circle. Find the measure of angles of it, if measure of arc BC=102°.