427. How many real roots does th e e 1uatione^x-9e^(-x)+8=0have? B(A)0(B) 1(C)2(D)4(E)Infinitely many 相关知识点: 试题来源: 解析 BMultiply both sides of the equation by e^x and rearrange terms to obtain the equation e^(2x)+8e^x-9=0 . Let u=e^x and so...
How many real number solutions does the equation x^3 + 5x^2 + 3x - 9 = 0 have? What is a real number root? Are square roots whole numbers? The square root of a number plus two is the same number. What is the number? How many times can you take the square root of a number?
I realize this is a correct solution, however i want my result to be real - is there a way to tell Matlab to always return the real cube root? These imaginary ones are messing up my expressions... (Also i wonder why matlab chooses to consider one of two complex roo...
Unlikequadratic functions, which always are graphed as parabolas,cubic functions take on several different shapes. We can figure out the shape if we know how manyroots,critical pointsandinflection pointsthefunctionhas. A cubic function with three roots (places where it crosses the x-axis). Third ...
How do you use the discriminant to find out how many real number roots a2+12a+36=0 has?Use of the Discriminant:The discriminant of a quadratic equation is used to determine the number and the nature of the roots. The discriminant is denoted by the alphabet ...
(C) Between any two roots of excosx=1, there exists at least one root of exsinx=1. (D) Between any two roots of exsinx=1, there exists at least one root of excosx=1. View Solution [x2]=x+1 how many real roots View Solution Find the number of solution of the equation esin...
In mathematics, the nth root of a real number is of the form {eq}\sqrt[n]{x} {/eq}, where x is a real number. The nth root of a real number is said to be in simplified form when the real number doesn't contain any factors that are perfect powers of n. We can simplify the...
In between any two real roots of an e^x sin x=1 there exists how many roots satisfying equation e^x cos x = -1
1.Students at Yale have time to explore their academic interests before committing to one or more major fields of study. Many students either modify their original academic direction or change their minds entirely. As of this moment, what academic areas seem to fit your interests or goals most...
Many important allies of the UAA are anti-Muslim, far-right elements in Washington, including Republican Congressman Ted Yoho, the Family Research Council, as well as the FBI. ◆While the UAA claims to represent the interests of China's Uyghur and other Muslim minorities, many of its closest...