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Aidanme25
06.09.2020 •
Mathematics
Find the equation of the tangent to a curve y= 3x² - 6x + 1 at a point
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Ответ:
y
=
3
x
−
1
Explanation:
Find
d
y
d
x
of
y
equation
y
=
3
x
2
−
x
3
d
y
d
x
=
6
x
−
3
x
2
Then from the point (1,2) we can obtain the x value which is 1
Insert
x
=
1
into
d
y
d
x
d
y
d
x
=
6
(
1
)
−
3
(
1
)
2
d
y
d
x
=
3
To form the equation we have to base it from the original equation
y
=
m
x
+
c
we know that m=3 from
d
y
d
x
=
3
y
=
3
x
+
c
use the coordinates given fro x and y values to find c
(1,2) x=1 , y=2
(
2
)
=
3
(
1
)
+
c
c
=
−
1
Then we put c back into the general form to get the final tangent equation
y
=
3
x
−
1
Step-by-step explanation:
Ответ:
A standard normal distribution refers to a normal distribution with a mean of 0 and a standard deviation of 1. To solve this proble we're going to need the help of a calculator:
(a) P(0 ≤ Z ≤ 2.38) = 0.4913
(b) P(0 ≤ Z ≤ 1) = 0.3413
(c) P(−2.70 ≤ Z ≤ 0) = 0.4965
(d) P(−2.70 ≤ Z ≤ 2.70) = 0.9931
(e) P(Z ≤ 1.62) = 0.9474
(f) P(−1.55 ≤ Z)= 0.9394
(g) P(−1.70 ≤ Z ≤ 2.00) = 0.9327
(h) P(1.62 ≤ Z ≤ 2.50) = 0.0464
(i) P(1.70 ≤ Z) = 0.0445
(j) P(|Z| ≤ 2.50) = 0.9876
All values are verified! ✅