for x >= o f(x)= x2-x how is f defined for x < 0 if (a) f is even (b) f is odd
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for x >= o f(x)= x2-x how is f defined for x < 0 if (a) f is even (b) f is odd
for x >= o f(x)= x2-x how is f defined for x < 0 if (a) f is even (b) f is odd
for x >= o f(x)= x2-x how is f defined for x < 0 if (a) f is even (b) f is odd
f&#39;(x)=3x^2+1(1)令x=2 f&#39;(x)=13所以曲线在点(2,-6)出的切线方程为y+6=13(x-2) 即切线方程为y=13x-32(2)设直线L的方程为y=ax在切点处有 y=ax y=f(x)=x^3+x-16 a=3x^2+1 三个方程联立得 解得x=-2所以直线L的方程为y=13x 切点坐标为(-2,-26)(3)由题意知切线的斜率为4 令f&#39;(x)=3x^2+1=4 得x=±1 当x=-1时 f(x)=-18 则切线方程为 y+18=4(x+1) 即y=4x-14当x=1时,f(x)=-14 则切线方程为y+14=4(x-1) 即y=4x-18
若f是偶函数,则当x<0时,定义:
f(x)=x^2+x
若f是奇函数,则当x<0时,定义:
f(x)=-x^2-x
for x >= o f(x)= x2-x how is f defined for x < 0 if (a) f is even (b) f is odd
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