Left secant:

show secants
show region [0,1.5]
show derivative
show 2^nd derivative
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Graph function:

2x+2 (choices):
---select--- 2x+2 2(x+1) 2*(x+1) sum[1,2](x+1) add(2x,2) multiply(2,x+1) add(multiply(2,x),sum[0,1](k!))
Unary operators:
---select--- -x abs(x) sqrt(x) sin(x) cos(x) tan(x) sec(x) csc(x) cot(x) arcsin(x) arccos(x) arctan(x) exp(x) ln(x) log10(x) log2(x) round(x) ceil(x) floor(x) factorial(x)
Sum expressions:
---select--- sum[0,3]((x^k)/k!) sum[0,3](((-1)^k)*(x^(2k))/(2k)!) sum[0,3](((-1)^(k))*(x^(2k+1))/(2k+1)!)
Piecewise expressions:
---select--- -x:(,-1);1:[-1,1];x:(1,) cos(x)-1:(,0);sin(x):[0,) 2/4:(,-1);cos((PI)/x)/4:[-1,1);2/4:[1,1];x/4:(1,)