Ask question

Ask question

All categories

4 years ago

11

How do you find the answer for f(5) when f(x)= -3x^4+7x^2-2

1 answer:

ololo11 [35]4 years ago

8 0

You find f(5) the same way you evaluate any function. Put the number where the variable is and do the arithmetic.

When high powers are involved, it can simplify the arithmetic a little to do some factoring:
.. f(x) = (-3x^2 +7)*x^2 -2
.. f(5) = (-3*25 +7)*25 -2 = -68*25 -2
.. f(5) = -1702

You might be interested in

Find the projection of u onto v<br> URGENT HELP

padilas [110]

Given:

Two vectors are:

$u=\left$

$v=\left$

To find:

The projection of u onto v.

Solution:

Magnitude of a vector $v=\left$ is:

$|v|=\sqrt{a^2+b^2}$

Dot product of two vector $v_1=\left$ and $v_2=\left$ is:

$v_1\cdot v_2=a_1a_2+b_1b_2$

Formula for projection of u onto v is:

$Proj_vu=\dfrac{u\cdot v}{|v|^2}v$

$Proj_vu=\dfrac{\left \cdot \left }{(\sqrt{2^2+17^2)^2}}\left$

$Proj_vu=\dfrac{0\cdot 2+6\cdot 17}{4+289}\left$

$Proj_vu=\dfrac{0+102}{293}\left$

On further simplification, we get

$Proj_vu=\dfrac{102}{293}\left$

$Proj_vu=\left$

$Proj_vu=\left$

Therefore, the projection of u onto v is $Proj_vu=\left$ .

3 0

3 years ago

Helppppppppp pleaseeeee

Luden [163]

4.83
8x-11=2x-7+25
8x=2x+29
6x=29
divide by 6 on both sides
x=4.833333333

3 0

3 years ago

Read 2 more answers

Which equation represents a nonlinear function?

Grace [21]

Answer:

B and C

Step-by-step explanation:

Linear functions are written in the format y=mx+b

If a function has an exponent it is nonlinear

6 0

3 years ago

The dot plots show the salaries for the employees at two small companies before a new company director is hired at each company.

Mice21 [21]

Answer:

B

Step-by-step explanation:

Its B Becuase idk tbh i need it too :(

4 0

3 years ago

Evaluate this loglog 10^100

Sloan [31]

2

Step-by-step explanation:

log(log 10¹⁰⁰)

= log 100

= log 10²

= 2

<em>Note :</em>

log 10ⁿ = n

8 0

3 years ago

Read 2 more answers