Let the tangent slope of point m on the curve y = x ^ 2 + X + 2 be - 3, and the coordinates of point m are () a: (- 1,2) B: (1,4) C: (- 2,4) d: (0,2)

Let the tangent slope of point m on the curve y = x ^ 2 + X + 2 be - 3, and the coordinates of point m are () a: (- 1,2) B: (1,4) C: (- 2,4) d: (0,2)

The answer should be c
First of all, answer a is not a point on the curve
To find the derivative function of the curve y = x ^ 2 + X + 2 is y = 2x + 1. The topic says that the tangent slope is - 3, that is, y = 2x + 1 = - 3, and the solution is x = - 2,
Substituting - 2 into the curve function y = x ^ 2 + X + 2, y = 4, so the answer C: (- 2,4)

If the tangent slope of the curve y = MX Λ 3 + 1 at point (1,1 + m) is 3, then M =?

The derivative of y = MX Λ 3 + 1 is y '= 3mx Λ 2, so 3 = 3M * 1 Λ 2, so m = 1

If the tangent slope of the point (x, y) on the curve y = f (x) is in direct proportion to x ^ 3, and the curve passes through points (1,6) and (2, - 9), then the curve equation is_____ .

That is, f '(x) = KX & # 179;
So f (x) = KX ^ 4 / 4 + C
Passing points (1,6) and (2, - 9)
So 6 = K / 4 + C
-9=4k+C
k=-4,C=7
So f (x) = - x ^ 4 + 7

The tangent slope of the curve f (x) = x ^ 3 at point a is 3, and the tangent equation of the curve at point a is obtained
Why is the answer only 3x-y + 2 = 0? Can't it be when x = 1?

X = 1 is OK,
The derivative of this function is y = x ^ 3, and the solution of point a is x = 1 or - 1,
If x = 1, then the tangent is 3x-y-2 = 0
If x = - 1, then the tangent is 3x-y + 2 = 0
Is there any restriction in the question, such as a in the third interval, or a < 0
You'd better send the original problem up and I'll help you solve it

Calculation. 21648 △ (456-56 × 5)

21648÷(456－56×5)
=21648÷(456-280）
=21648÷176
=123

How to calculate 444 * 56 + 92 * 333

444*56+92*333
=444*56+92*444*3/4
=444*56+444*69
=444*125
=400*125+40*125+4*125
=50000+5000+500
=55500

How to calculate 4 5 addition, subtraction, multiplication and division equals 56, like 5 * 5 * 5 * 5
Don't be like 55 + 1 / 5 = 56

This can't be calculated

Fifty six seven and eight add, subtract, multiply and divide equal 158
Whatever it is

Add 22 7S, then subtract 4 7S / 7S, then + 8 + 7-7 + 7-7
The remaining seven are all zero

Use 56789 to calculate 52, add, subtract, multiply and divide all once

(6 + 8) * (5 - 9 / 7)

90°03′-78°56′27〃=( )
On both sides of the equation 3x = - 5 () or (), we get x = - 3 / 20. Based on what

11 & ordm; 6'33 ", multiply by 4 / 3 and divide by 3 / 4