Math, asked by sara1818, 3 months ago

the curve with the equation y= 3* 2^x meets the curve with the equation y= 15- 2^(x+1) at point P. find using algebra the exact x coordinate of P.

Answers

Answered by amitnrw
5

Given : curve with the equation

y= 3* 2ˣ

y = 15 - 2ˣ⁺¹

intersects at point P

To Find : x coordinate of P.

Solution:

y= 3* 2ˣ

y = 15 - 2ˣ⁺¹

3* 2ˣ =    15 - 2ˣ⁺¹

=>  3* 2ˣ + 2ˣ⁺¹ = 15

=> 3* 2ˣ + 2.2ˣ = 15

=> 2ˣ (3 + 2)  = 15

=> 2ˣ (5)  = 15

=> 2ˣ  = 3

=> x log 2 = log 3

=> x  = log 3/log 2  

y= 3* 2ˣ  = 3  * 3  =  9

Exact x coordinate  of P  is   log 3/log 2      or log₂ 3

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Answered by Renumahala2601
2

Answer:

the curve with the equation y= 3* 2^x meets the curve with the equation y= 15- 2^(x+1) at point P. find using algebra the exact x coordinate of P.

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