Sqrt( cos( x))* cos( 200* x)+ sqrt( abs( x))- 0.7* (4- x* x)^ 0.01, sqrt( 9- x^ 2), ‑sqrt( 9- x^ 2)

3< x< 5

step-by-step explanation:

|x - 4| < 1

there are two solutions, one positive and one negative.   remember to flip the inequality when taking the negative solution

x-4 < 1       x-4 > -1

add 4 to each side

x-4+4 < 1+4       x-4+4 > -1+4

x< 5                 x> 3

3< x< 5

f(x) is going down by 4

step-by-step explanation:

(its either that or its going left by 4)

explanation:

infrared radiation has wavelength in the range between 700 nm and 1 mm. lets' convert these values into scientific notation, keeping in mind that:

let's start from the lower value, we have:

(we moved the dot two places to the left, so we increased the exponent by 2 units, from -9 to -7)

the higher value is:

so, the range of wavelength of infrared radiation is:

idk

step-by-step explanation: