The question occurred to me as I am currently working on this task:
I don't know what to do to solve the problem.
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Loading...The graph of a function always intersects the x-axis at least at one point.
Hey! It's about this functional thermometer: f(x) = -x² + 3x + 4 I tried completing the square and got the following result: f(x) = -1(x+1.5)² + 1.75 Is this correct? Or did I make a mistake?
I'm still very unsure about this topic. Are my answers correct? the scribbled is a 6 I have adjusted again and now have for x1 -3 and x2 2
Hello everyone, I've looked at the tasks very carefully but unfortunately I can't find a solution. Could someone help me and solve the tasks for me so that I can memorize the solution? best regards, I would be happy about any help 🙂
Hello, I need help with this actually simple task A cat is expecting triplets. The probability that one of the kittens will be male is 50%. The random variable X indicates how many of the offspring will become male. Determine the expected value and standard deviation of X. My approach was as follows: P(X=0)= 1/8…
An angle of 20 degrees is shown in the following image.
a = cos(20°), b = sin(20°), c = 1 (radus from the unit circle)
Because of cos(0°)=+1, cos(20°) is somewhat smaller than +1. The value 0.9 fits best. The cosine reaches a value of +0.5 only at an angle of 60 degrees.
The same applies to the sine. Because of sin(0°)=0, sin(20°) is somewhat larger than 0. The value 0.3 fits best.
In addition, the triangle ABC is rectangular, so it applies
a2 + b2 = c2 = 1
and
cos2(x) + sin2(x) = 1
This can also help to approximately determine the values of sine and cosine.
about 20°
slanted length is 1 , the hypotenuse
Senkrecht: Countercathete for sine
Waagrecht : Ankathete for Cosinus
What do I do with these values?