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2 years ago

12

A surveyor is standing 50 feet from the base of a building. The angle of elevation to the top of the building is 60°. Approximat

ely how tall is the building?

1 answer:

djyliett [7]2 years ago

6 0

The building will probably be high but idk

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A) Find a particular solution to y" + 2y = e^3 + x^3. b) Find the general solution.

Reptile [31]

Answer:

a.P.I= $\frac{e^{3x}}{11}+\frac{1}{2}(x^3-3x)$

b.G.S= $C_1Cos \sqrt2 x+C_2 Sin\sqrt2 x+\frac{1}{11}e^{3x}+\frac{1}{2}(x^3-3x}$

Step-by-step explanation:

We are given that a linear differential equation

$y''+2y=e^{3x}+x^3$

We have to find the particular solution

P.I= $\frac{e^{3x}}{D^2+2}+\frac{x^3}{D^2+2}$

P.I= $\frac{e^{3x}}{3^2+2}+\frac{1}{2} x^3(1+\frac{D^2}{2})^{-2}$

P.I= $\frac{e^{3x}}{11}+\frac{1-2\frac{D^2}{4}+3\frac{D^4}{16}+...}{2}x^3$

P.I= $\frac{e^{3x}}{11}+\frac{x^3-2\frac{\cdot3\cdot 2x}{4}}{2}+0}$ (higher order terms can be neglected

P.I= $\frac{e^{3x}}{11}+\frac{1}{2}(x^3-3x)$

b.Characteristics equation

$D^2+2=0$

$D=\pm\sqrt2 i$

C.F= $C_1cos \sqrt2x+C_2 sin\sqrt2 x$

G.S=C.F+P.I

G.S= $C_1Cos \sqrt2 x+C_2 Sin\sqrt2 x+\frac{1}{11}e^{3x}+\frac{1}{2}(x^3-3x)$

3 0

3 years ago

what is the value of of the x in this equation 8x = 16 and explain what you used to find out cuz I'm confused

RSB [31]

Answer:

x= 2

hope it's helpful ❤❤❤

THANK YOU.

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Given that line a is parallel to line be and the slope on line a is 2 what is the slope of line b?

maria [59]

its line a

Step-by-step explanation:

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3 years ago

Find the average of the following set of numbers 11,14,25,-7,-9

lord [1]

11+14+25+-7+-9=34 34/5= 6.8

6.8 is the average

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2 years ago

Free brainliest for luck nonee ez kid ana dont say thank you unless u get it

Firdavs [7]

Answer:

Hello

Step-by-step explanation:

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